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Finding the Third Proportional to 206,571 and 318,519

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Solution

The third proportional to 206,571 and 318,519 is: 491,135.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,571 : 318,519 = 318,519 : x
  2. Step 2: Convert to fraction form
    206,571/318,519 = 318,519/x
  3. Step 3: Cross multiply
    206,571x = 318,519 × 318,519
  4. Step 4: Simplify right side
    206,571x = 101,454,353,361
  5. Step 5: Solve for x
    x = 101,454,353,361/206,571
  6. Step 6: Final answer
    x = 491,135.51

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.