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Finding the Fourth Proportional to 438,761.71, 658,142.52 and 106,337.71

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Solution

The fourth proportional to 438,761.71, 658,142.52 and 106,337.71 is: 159,506.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,761.71 : 658,142.52 = 106,337.71 : x
  2. Step 2: Convert to fraction form
    438,761.71/658,142.52 = 106,337.71/x
  3. Step 3: Cross multiply
    438,761.71x = 658,142.52 × 106,337.71
  4. Step 4: Simplify right side
    438,761.71x = 69,985,368,430.43
  5. Step 5: Solve for x
    x = 69,985,368,430.43/438,761.71
  6. Step 6: Final answer
    x = 159,506.55

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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.