Finding the Fourth Proportional to 391,253.14, 586,963.95 and 121,375.81
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Solution
The fourth proportional to 391,253.14, 586,963.95 and 121,375.81 is: 182,089.85
Step by Step Solution
- Step 1: Write the proportion equation
391,253.14 : 586,963.95 = 121,375.81 : x - Step 2: Convert to fraction form
391,253.14/586,963.95 = 121,375.81/x - Step 3: Cross multiply
391,253.14x = 586,963.95 × 121,375.81 - Step 4: Simplify right side
391,253.14x = 71,243,224,872.05 - Step 5: Solve for x
x = 71,243,224,872.05/391,253.14 - Step 6: Final answer
x = 182,089.85
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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.