Finding the Fourth Proportional to 327,680.18, 491,711.33 and 138,128.94
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Solution
The fourth proportional to 327,680.18, 491,711.33 and 138,128.94 is: 207,273.95
Step by Step Solution
- Step 1: Write the proportion equation
327,680.18 : 491,711.33 = 138,128.94 : x - Step 2: Convert to fraction form
327,680.18/491,711.33 = 138,128.94/x - Step 3: Cross multiply
327,680.18x = 491,711.33 × 138,128.94 - Step 4: Simplify right side
327,680.18x = 67,919,564,798.89 - Step 5: Solve for x
x = 67,919,564,798.89/327,680.18 - Step 6: Final answer
x = 207,273.95
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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.