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Finding the Fourth Proportional to 615,132.90, 922,691.52 and 210,321.02

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Solution

The fourth proportional to 615,132.90, 922,691.52 and 210,321.02 is: 315,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,132.90 : 922,691.52 = 210,321.02 : x
  2. Step 2: Convert to fraction form
    615,132.90/922,691.52 = 210,321.02/x
  3. Step 3: Cross multiply
    615,132.90x = 922,691.52 × 210,321.02
  4. Step 4: Simplify right side
    615,132.90x = 194,061,423,938.48
  5. Step 5: Solve for x
    x = 194,061,423,938.48/615,132.90
  6. Step 6: Final answer
    x = 315,478.86

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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.