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Finding the Fourth Proportional to 269,272.70, 403,909.05 and 91,979.90

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Solution

The fourth proportional to 269,272.70, 403,909.05 and 91,979.90 is: 137,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,272.70 : 403,909.05 = 91,979.90 : x
  2. Step 2: Convert to fraction form
    269,272.70/403,909.05 = 91,979.90/x
  3. Step 3: Cross multiply
    269,272.70x = 403,909.05 × 91,979.90
  4. Step 4: Simplify right side
    269,272.70x = 37,151,514,028.10
  5. Step 5: Solve for x
    x = 37,151,514,028.10/269,272.70
  6. Step 6: Final answer
    x = 137,969.85

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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.