Answer:
210 : 224 : 147
Explanation:
You want to divide 581 into three parts in the ratio 1 1/4 : 1 1/3 : 7/8.
Sum
The sum of the parts is ...
1 1/4 +1 1/3 +7/8 = 10/8 + 4/3 + 7/8 = 17/8 +4/3 = (51 +32)/24 = 83/24
Scale factor
Multiplying the ratio values by (581/(83/24)) = 168 will give the desired values.
- 168 × 1 1/4 = 210
- 168 × 1 1/3 = 224
- 168 × 7/8 = 147
The desired division is 210 : 224 : 147.
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Additional comment
The values {30, 32, 21} seen in the attached calculator image are the result of multiplying the ratio by its least common denominator, 24.
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