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Finding the Fourth Proportional to 445,062.59, 667,698.89 and 145,542

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Solution

The fourth proportional to 445,062.59, 667,698.89 and 145,542 is: 218,347.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,062.59 : 667,698.89 = 145,542 : x
  2. Step 2: Convert to fraction form
    445,062.59/667,698.89 = 145,542/x
  3. Step 3: Cross multiply
    445,062.59x = 667,698.89 × 145,542
  4. Step 4: Simplify right side
    445,062.59x = 97,178,231,848.38
  5. Step 5: Solve for x
    x = 97,178,231,848.38/445,062.59
  6. Step 6: Final answer
    x = 218,347.34

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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.