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Finding the Fourth Proportional to 226,720.80, 340,081.20 and 136,519.20

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Solution

The fourth proportional to 226,720.80, 340,081.20 and 136,519.20 is: 204,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,720.80 : 340,081.20 = 136,519.20 : x
  2. Step 2: Convert to fraction form
    226,720.80/340,081.20 = 136,519.20/x
  3. Step 3: Cross multiply
    226,720.80x = 340,081.20 × 136,519.20
  4. Step 4: Simplify right side
    226,720.80x = 46,427,613,359.04
  5. Step 5: Solve for x
    x = 46,427,613,359.04/226,720.80
  6. Step 6: Final answer
    x = 204,778.80

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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.