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Finding the Fourth Proportional to 417,439.89, 626,250.56 and 136,946.61

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Solution

The fourth proportional to 417,439.89, 626,250.56 and 136,946.61 is: 205,449.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,439.89 : 626,250.56 = 136,946.61 : x
  2. Step 2: Convert to fraction form
    417,439.89/626,250.56 = 136,946.61/x
  3. Step 3: Cross multiply
    417,439.89x = 626,250.56 × 136,946.61
  4. Step 4: Simplify right side
    417,439.89x = 85,762,890,517.87
  5. Step 5: Solve for x
    x = 85,762,890,517.87/417,439.89
  6. Step 6: Final answer
    x = 205,449.68

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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.