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Finding the Fourth Proportional to 439,463.72, 659,258.72 and 135,881.52

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Solution

The fourth proportional to 439,463.72, 659,258.72 and 135,881.52 is: 203,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,463.72 : 659,258.72 = 135,881.52 : x
  2. Step 2: Convert to fraction form
    439,463.72/659,258.72 = 135,881.52/x
  3. Step 3: Cross multiply
    439,463.72x = 659,258.72 × 135,881.52
  4. Step 4: Simplify right side
    439,463.72x = 89,581,075,217.70
  5. Step 5: Solve for x
    x = 89,581,075,217.70/439,463.72
  6. Step 6: Final answer
    x = 203,841.80

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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.