Finding the Fourth Proportional to 386,587,728.92, 533,491,153.36 and 212,747,472.92
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Solution
The fourth proportional to 386,587,728.92, 533,491,153.36 and 212,747,472.92 is: 293,591,560.76
Step by Step Solution
- Step 1: Write the proportion equation
386,587,728.92 : 533,491,153.36 = 212,747,472.92 : x - Step 2: Convert to fraction form
386,587,728.92/533,491,153.36 = 212,747,472.92/x - Step 3: Cross multiply
386,587,728.92x = 533,491,153.36 × 212,747,472.92 - Step 4: Simplify right side
386,587,728.92x = 113,498,894,702,516,160 - Step 5: Solve for x
x = 113,498,894,702,516,160/386,587,728.92 - Step 6: Final answer
x = 293,591,560.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.