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Finding the Third Proportional to 98,645 and 217,398

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Solution

The third proportional to 98,645 and 217,398 is: 479,110.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,645 : 217,398 = 217,398 : x
  2. Step 2: Convert to fraction form
    98,645/217,398 = 217,398/x
  3. Step 3: Cross multiply
    98,645x = 217,398 × 217,398
  4. Step 4: Simplify right side
    98,645x = 47,261,890,404
  5. Step 5: Solve for x
    x = 47,261,890,404/98,645
  6. Step 6: Final answer
    x = 479,110.86

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.