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Finding the Fourth Proportional to 445,038.72, 667,560.96 and 112,614.72

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Solution

The fourth proportional to 445,038.72, 667,560.96 and 112,614.72 is: 168,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,038.72 : 667,560.96 = 112,614.72 : x
  2. Step 2: Convert to fraction form
    445,038.72/667,560.96 = 112,614.72/x
  3. Step 3: Cross multiply
    445,038.72x = 667,560.96 × 112,614.72
  4. Step 4: Simplify right side
    445,038.72x = 75,177,190,593.33
  5. Step 5: Solve for x
    x = 75,177,190,593.33/445,038.72
  6. Step 6: Final answer
    x = 168,922.81

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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.