Step 1:
The first step to converting 281.437500486 to a fraction is to re-write 281.437500486 in the form p/q where p and q are both positive integers. To start with, 281.437500486 can be written as simply 281.437500486/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 281.437500486, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 281.437500486/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 281.437500486/1 each by 1000000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 281.437500486 as a fraction:
4503/16 / 1