Finding the Fourth Proportional to 431,691.60, 647,480.70 and 132,202.20
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Solution
The fourth proportional to 431,691.60, 647,480.70 and 132,202.20 is: 198,285.94
Step by Step Solution
- Step 1: Write the proportion equation
431,691.60 : 647,480.70 = 132,202.20 : x - Step 2: Convert to fraction form
431,691.60/647,480.70 = 132,202.20/x - Step 3: Cross multiply
431,691.60x = 647,480.70 × 132,202.20 - Step 4: Simplify right side
431,691.60x = 85,598,372,997.54 - Step 5: Solve for x
x = 85,598,372,997.54/431,691.60 - Step 6: Final answer
x = 198,285.94
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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.