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Finding the Fourth Proportional to 445,227.13, 667,871.61 and 178,987.78

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Solution

The fourth proportional to 445,227.13, 667,871.61 and 178,987.78 is: 268,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,227.13 : 667,871.61 = 178,987.78 : x
  2. Step 2: Convert to fraction form
    445,227.13/667,871.61 = 178,987.78/x
  3. Step 3: Cross multiply
    445,227.13x = 667,871.61 × 178,987.78
  4. Step 4: Simplify right side
    445,227.13x = 119,540,856,798.93
  5. Step 5: Solve for x
    x = 119,540,856,798.93/445,227.13
  6. Step 6: Final answer
    x = 268,494.10

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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.