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Finding the Fourth Proportional to 226,979.80, 340,469.70 and 115,005.40

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Solution

The fourth proportional to 226,979.80, 340,469.70 and 115,005.40 is: 172,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,979.80 : 340,469.70 = 115,005.40 : x
  2. Step 2: Convert to fraction form
    226,979.80/340,469.70 = 115,005.40/x
  3. Step 3: Cross multiply
    226,979.80x = 340,469.70 × 115,005.40
  4. Step 4: Simplify right side
    226,979.80x = 39,155,854,036.38
  5. Step 5: Solve for x
    x = 39,155,854,036.38/226,979.80
  6. Step 6: Final answer
    x = 172,508.10

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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.