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Finding the Fourth Proportional to 438,756.38, 658,134.56 and 106,332.38

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Solution

The fourth proportional to 438,756.38, 658,134.56 and 106,332.38 is: 159,498.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,756.38 : 658,134.56 = 106,332.38 : x
  2. Step 2: Convert to fraction form
    438,756.38/658,134.56 = 106,332.38/x
  3. Step 3: Cross multiply
    438,756.38x = 658,134.56 × 106,332.38
  4. Step 4: Simplify right side
    438,756.38x = 69,981,011,100.21
  5. Step 5: Solve for x
    x = 69,981,011,100.21/438,756.38
  6. Step 6: Final answer
    x = 159,498.56

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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.