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Finding the Fourth Proportional to 652,721.90, 978,861.12 and 226,158.17

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Solution

The fourth proportional to 652,721.90, 978,861.12 and 226,158.17 is: 339,160.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,721.90 : 978,861.12 = 226,158.17 : x
  2. Step 2: Convert to fraction form
    652,721.90/978,861.12 = 226,158.17/x
  3. Step 3: Cross multiply
    652,721.90x = 978,861.12 × 226,158.17
  4. Step 4: Simplify right side
    652,721.90x = 221,377,434,689.05
  5. Step 5: Solve for x
    x = 221,377,434,689.05/652,721.90
  6. Step 6: Final answer
    x = 339,160.42

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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.