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Finding the Fourth Proportional to 490,778.92, 736,167.39 and 135,791.92

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Solution

The fourth proportional to 490,778.92, 736,167.39 and 135,791.92 is: 203,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,778.92 : 736,167.39 = 135,791.92 : x
  2. Step 2: Convert to fraction form
    490,778.92/736,167.39 = 135,791.92/x
  3. Step 3: Cross multiply
    490,778.92x = 736,167.39 × 135,791.92
  4. Step 4: Simplify right side
    490,778.92x = 99,965,583,329.49
  5. Step 5: Solve for x
    x = 99,965,583,329.49/490,778.92
  6. Step 6: Final answer
    x = 203,687.61

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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.