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Finding the Fourth Proportional to 269,590.20, 404,385.30 and 129,276.60

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Solution

The fourth proportional to 269,590.20, 404,385.30 and 129,276.60 is: 193,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,590.20 : 404,385.30 = 129,276.60 : x
  2. Step 2: Convert to fraction form
    269,590.20/404,385.30 = 129,276.60/x
  3. Step 3: Cross multiply
    269,590.20x = 404,385.30 × 129,276.60
  4. Step 4: Simplify right side
    269,590.20x = 52,277,556,673.98
  5. Step 5: Solve for x
    x = 52,277,556,673.98/269,590.20
  6. Step 6: Final answer
    x = 193,914.90

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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.