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Finding the Fourth Proportional to 614,387.03, 921,995.46 and 215,031.11

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Solution

The fourth proportional to 614,387.03, 921,995.46 and 215,031.11 is: 322,691.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,387.03 : 921,995.46 = 215,031.11 : x
  2. Step 2: Convert to fraction form
    614,387.03/921,995.46 = 215,031.11/x
  3. Step 3: Cross multiply
    614,387.03x = 921,995.46 × 215,031.11
  4. Step 4: Simplify right side
    614,387.03x = 198,257,702,568.78
  5. Step 5: Solve for x
    x = 198,257,702,568.78/614,387.03
  6. Step 6: Final answer
    x = 322,691.88

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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.