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Finding the Fourth Proportional to 445,061.20, 667,656.60 and 145,469.20

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Solution

The fourth proportional to 445,061.20, 667,656.60 and 145,469.20 is: 218,224.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,061.20 : 667,656.60 = 145,469.20 : x
  2. Step 2: Convert to fraction form
    445,061.20/667,656.60 = 145,469.20/x
  3. Step 3: Cross multiply
    445,061.20x = 667,656.60 × 145,469.20
  4. Step 4: Simplify right side
    445,061.20x = 97,123,471,476.72
  5. Step 5: Solve for x
    x = 97,123,471,476.72/445,061.20
  6. Step 6: Final answer
    x = 218,224.98

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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.