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Finding the Fourth Proportional to 485,279.10, 727,659.45 and 204,479.10

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Solution

The fourth proportional to 485,279.10, 727,659.45 and 204,479.10 is: 306,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,279.10 : 727,659.45 = 204,479.10 : x
  2. Step 2: Convert to fraction form
    485,279.10/727,659.45 = 204,479.10/x
  3. Step 3: Cross multiply
    485,279.10x = 727,659.45 × 204,479.10
  4. Step 4: Simplify right side
    485,279.10x = 148,791,149,442.50
  5. Step 5: Solve for x
    x = 148,791,149,442.50/485,279.10
  6. Step 6: Final answer
    x = 306,609.43

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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.