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Finding the Third Proportional to 218,715 and 476,958

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Solution

The third proportional to 218,715 and 476,958 is: 1,040,115.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,715 : 476,958 = 476,958 : x
  2. Step 2: Convert to fraction form
    218,715/476,958 = 476,958/x
  3. Step 3: Cross multiply
    218,715x = 476,958 × 476,958
  4. Step 4: Simplify right side
    218,715x = 227,488,933,764
  5. Step 5: Solve for x
    x = 227,488,933,764/218,715
  6. Step 6: Final answer
    x = 1,040,115.83

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.