Finding the Fourth Proportional to 187,819,618.40, 281,729,427.60 and 115,260,207.20
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Solution
The fourth proportional to 187,819,618.40, 281,729,427.60 and 115,260,207.20 is: 172,890,310.80
Step by Step Solution
- Step 1: Write the proportion equation
187,819,618.40 : 281,729,427.60 = 115,260,207.20 : x - Step 2: Convert to fraction form
187,819,618.40/281,729,427.60 = 115,260,207.20/x - Step 3: Cross multiply
187,819,618.40x = 281,729,427.60 × 115,260,207.20 - Step 4: Simplify right side
187,819,618.40x = 32,472,192,199,513,404 - Step 5: Solve for x
x = 32,472,192,199,513,404/187,819,618.40 - Step 6: Final answer
x = 172,890,310.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.