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Finding the Fourth Proportional to 439,458.70, 659,251.22 and 135,876.53

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Solution

The fourth proportional to 439,458.70, 659,251.22 and 135,876.53 is: 203,834.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,458.70 : 659,251.22 = 135,876.53 : x
  2. Step 2: Convert to fraction form
    439,458.70/659,251.22 = 135,876.53/x
  3. Step 3: Cross multiply
    439,458.70x = 659,251.22 × 135,876.53
  4. Step 4: Simplify right side
    439,458.70x = 89,576,768,171.87
  5. Step 5: Solve for x
    x = 89,576,768,171.87/439,458.70
  6. Step 6: Final answer
    x = 203,834.33

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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.