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Finding the Third Proportional to 218,570 and 337,198

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Solution

The third proportional to 218,570 and 337,198 is: 520,210.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,570 : 337,198 = 337,198 : x
  2. Step 2: Convert to fraction form
    218,570/337,198 = 337,198/x
  3. Step 3: Cross multiply
    218,570x = 337,198 × 337,198
  4. Step 4: Simplify right side
    218,570x = 113,702,491,204
  5. Step 5: Solve for x
    x = 113,702,491,204/218,570
  6. Step 6: Final answer
    x = 520,210.88

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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.