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Finding the Fourth Proportional to 417,488.61, 625,517.16 and 280,454.90

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Solution

The fourth proportional to 417,488.61, 625,517.16 and 280,454.90 is: 420,201.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,488.61 : 625,517.16 = 280,454.90 : x
  2. Step 2: Convert to fraction form
    417,488.61/625,517.16 = 280,454.90/x
  3. Step 3: Cross multiply
    417,488.61x = 625,517.16 × 280,454.90
  4. Step 4: Simplify right side
    417,488.61x = 175,429,350,924.84
  5. Step 5: Solve for x
    x = 175,429,350,924.84/417,488.61
  6. Step 6: Final answer
    x = 420,201.52

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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.