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Finding the Fourth Proportional to 445,114.32, 667,780.92 and 129,573.96

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Solution

The fourth proportional to 445,114.32, 667,780.92 and 129,573.96 is: 194,392.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,114.32 : 667,780.92 = 129,573.96 : x
  2. Step 2: Convert to fraction form
    445,114.32/667,780.92 = 129,573.96/x
  3. Step 3: Cross multiply
    445,114.32x = 667,780.92 × 129,573.96
  4. Step 4: Simplify right side
    445,114.32x = 86,527,018,216.84
  5. Step 5: Solve for x
    x = 86,527,018,216.84/445,114.32
  6. Step 6: Final answer
    x = 194,392.80

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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.