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Finding the Fourth Proportional to 439,607.55, 659,404.17 and 140,084.09

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Solution

The fourth proportional to 439,607.55, 659,404.17 and 140,084.09 is: 210,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,607.55 : 659,404.17 = 140,084.09 : x
  2. Step 2: Convert to fraction form
    439,607.55/659,404.17 = 140,084.09/x
  3. Step 3: Cross multiply
    439,607.55x = 659,404.17 × 140,084.09
  4. Step 4: Simplify right side
    439,607.55x = 92,372,029,799.63
  5. Step 5: Solve for x
    x = 92,372,029,799.63/439,607.55
  6. Step 6: Final answer
    x = 210,123.85

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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.