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Finding the Fourth Proportional to 425,115.87, 586,686.41 and 234,129.21

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Solution

The fourth proportional to 425,115.87, 586,686.41 and 234,129.21 is: 323,112.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,115.87 : 586,686.41 = 234,129.21 : x
  2. Step 2: Convert to fraction form
    425,115.87/586,686.41 = 234,129.21/x
  3. Step 3: Cross multiply
    425,115.87x = 586,686.41 × 234,129.21
  4. Step 4: Simplify right side
    425,115.87x = 137,360,425,691.04
  5. Step 5: Solve for x
    x = 137,360,425,691.04/425,115.87
  6. Step 6: Final answer
    x = 323,112.91

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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.