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Finding the Third Proportional to 100,586.25 and 215,775

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Solution

The third proportional to 100,586.25 and 215,775 is: 462,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,586.25 : 215,775 = 215,775 : x
  2. Step 2: Convert to fraction form
    100,586.25/215,775 = 215,775/x
  3. Step 3: Cross multiply
    100,586.25x = 215,775 × 215,775
  4. Step 4: Simplify right side
    100,586.25x = 46,558,850,625
  5. Step 5: Solve for x
    x = 46,558,850,625/100,586.25
  6. Step 6: Final answer
    x = 462,874.90

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.