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Finding the Fourth Proportional to 486,841.57, 730,254.45 and 187,387.20

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Solution

The fourth proportional to 486,841.57, 730,254.45 and 187,387.20 is: 281,077.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,841.57 : 730,254.45 = 187,387.20 : x
  2. Step 2: Convert to fraction form
    486,841.57/730,254.45 = 187,387.20/x
  3. Step 3: Cross multiply
    486,841.57x = 730,254.45 × 187,387.20
  4. Step 4: Simplify right side
    486,841.57x = 136,840,336,673.04
  5. Step 5: Solve for x
    x = 136,840,336,673.04/486,841.57
  6. Step 6: Final answer
    x = 281,077.76

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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.