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Finding the Fourth Proportional to 408,182.30, 612,279.72 and 155,476.88

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Solution

The fourth proportional to 408,182.30, 612,279.72 and 155,476.88 is: 233,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,182.30 : 612,279.72 = 155,476.88 : x
  2. Step 2: Convert to fraction form
    408,182.30/612,279.72 = 155,476.88/x
  3. Step 3: Cross multiply
    408,182.30x = 612,279.72 × 155,476.88
  4. Step 4: Simplify right side
    408,182.30x = 95,195,337,491.48
  5. Step 5: Solve for x
    x = 95,195,337,491.48/408,182.30
  6. Step 6: Final answer
    x = 233,217.70

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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.