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Finding the Fourth Proportional to 322,691.12, 445,279.64 and 179,428.04

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Solution

The fourth proportional to 322,691.12, 445,279.64 and 179,428.04 is: 247,591.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,691.12 : 445,279.64 = 179,428.04 : x
  2. Step 2: Convert to fraction form
    322,691.12/445,279.64 = 179,428.04/x
  3. Step 3: Cross multiply
    322,691.12x = 445,279.64 × 179,428.04
  4. Step 4: Simplify right side
    322,691.12x = 79,895,653,057.11
  5. Step 5: Solve for x
    x = 79,895,653,057.11/322,691.12
  6. Step 6: Final answer
    x = 247,591.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.