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Finding the Third Proportional to 123,245 and 252,331

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Solution

The third proportional to 123,245 and 252,331 is: 516,620.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,245 : 252,331 = 252,331 : x
  2. Step 2: Convert to fraction form
    123,245/252,331 = 252,331/x
  3. Step 3: Cross multiply
    123,245x = 252,331 × 252,331
  4. Step 4: Simplify right side
    123,245x = 63,670,933,561
  5. Step 5: Solve for x
    x = 63,670,933,561/123,245
  6. Step 6: Final answer
    x = 516,620.82

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.