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Finding the Fourth Proportional to 445,257.24, 667,893.15 and 129,731.46

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Solution

The fourth proportional to 445,257.24, 667,893.15 and 129,731.46 is: 194,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,257.24 : 667,893.15 = 129,731.46 : x
  2. Step 2: Convert to fraction form
    445,257.24/667,893.15 = 129,731.46/x
  3. Step 3: Cross multiply
    445,257.24x = 667,893.15 × 129,731.46
  4. Step 4: Simplify right side
    445,257.24x = 86,646,753,473.50
  5. Step 5: Solve for x
    x = 86,646,753,473.50/445,257.24
  6. Step 6: Final answer
    x = 194,599.31

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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.