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Finding the Third Proportional to 100,358.50 and 220,399

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Solution

The third proportional to 100,358.50 and 220,399 is: 484,021.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,358.50 : 220,399 = 220,399 : x
  2. Step 2: Convert to fraction form
    100,358.50/220,399 = 220,399/x
  3. Step 3: Cross multiply
    100,358.50x = 220,399 × 220,399
  4. Step 4: Simplify right side
    100,358.50x = 48,575,719,201
  5. Step 5: Solve for x
    x = 48,575,719,201/100,358.50
  6. Step 6: Final answer
    x = 484,021.97

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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.