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Finding the Fourth Proportional to 425,698.13, 638,251.92 and 226,158.65

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Solution

The fourth proportional to 425,698.13, 638,251.92 and 226,158.65 is: 339,081.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,698.13 : 638,251.92 = 226,158.65 : x
  2. Step 2: Convert to fraction form
    425,698.13/638,251.92 = 226,158.65/x
  3. Step 3: Cross multiply
    425,698.13x = 638,251.92 × 226,158.65
  4. Step 4: Simplify right side
    425,698.13x = 144,346,192,587.11
  5. Step 5: Solve for x
    x = 144,346,192,587.11/425,698.13
  6. Step 6: Final answer
    x = 339,081.11

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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.