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Finding the Fourth Proportional to 410,146.10, 615,219.15 and 251,861.30

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Solution

The fourth proportional to 410,146.10, 615,219.15 and 251,861.30 is: 377,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,146.10 : 615,219.15 = 251,861.30 : x
  2. Step 2: Convert to fraction form
    410,146.10/615,219.15 = 251,861.30/x
  3. Step 3: Cross multiply
    410,146.10x = 615,219.15 × 251,861.30
  4. Step 4: Simplify right side
    410,146.10x = 154,949,894,903.90
  5. Step 5: Solve for x
    x = 154,949,894,903.90/410,146.10
  6. Step 6: Final answer
    x = 377,791.95

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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.