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Finding the Fourth Proportional to 308,436.52, 425,161.02 and 283,691.08

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Solution

The fourth proportional to 308,436.52, 425,161.02 and 283,691.08 is: 391,050.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,436.52 : 425,161.02 = 283,691.08 : x
  2. Step 2: Convert to fraction form
    308,436.52/425,161.02 = 283,691.08/x
  3. Step 3: Cross multiply
    308,436.52x = 425,161.02 × 283,691.08
  4. Step 4: Simplify right side
    308,436.52x = 120,614,388,937.70
  5. Step 5: Solve for x
    x = 120,614,388,937.70/308,436.52
  6. Step 6: Final answer
    x = 391,050.93

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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.