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Finding the Fourth Proportional to 269,581.80, 404,631.90 and 136,612.20

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Solution

The fourth proportional to 269,581.80, 404,631.90 and 136,612.20 is: 205,049.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,581.80 : 404,631.90 = 136,612.20 : x
  2. Step 2: Convert to fraction form
    269,581.80/404,631.90 = 136,612.20/x
  3. Step 3: Cross multiply
    269,581.80x = 404,631.90 × 136,612.20
  4. Step 4: Simplify right side
    269,581.80x = 55,277,654,049.18
  5. Step 5: Solve for x
    x = 55,277,654,049.18/269,581.80
  6. Step 6: Final answer
    x = 205,049.65

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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.