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Finding the Third Proportional to 220,662 and 330,921

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Solution

The third proportional to 220,662 and 330,921 is: 496,273.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,662 : 330,921 = 330,921 : x
  2. Step 2: Convert to fraction form
    220,662/330,921 = 330,921/x
  3. Step 3: Cross multiply
    220,662x = 330,921 × 330,921
  4. Step 4: Simplify right side
    220,662x = 109,508,708,241
  5. Step 5: Solve for x
    x = 109,508,708,241/220,662
  6. Step 6: Final answer
    x = 496,273.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.