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Finding the Fourth Proportional to 445,167.28, 667,305.42 and 220,691.98

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Solution

The fourth proportional to 445,167.28, 667,305.42 and 220,691.98 is: 330,817.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,167.28 : 667,305.42 = 220,691.98 : x
  2. Step 2: Convert to fraction form
    445,167.28/667,305.42 = 220,691.98/x
  3. Step 3: Cross multiply
    445,167.28x = 667,305.42 × 220,691.98
  4. Step 4: Simplify right side
    445,167.28x = 147,268,954,404.53
  5. Step 5: Solve for x
    x = 147,268,954,404.53/445,167.28
  6. Step 6: Final answer
    x = 330,817.11

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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.