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Finding the Third Proportional to 142,443 and 220,551

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Solution

The third proportional to 142,443 and 220,551 is: 341,489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,443 : 220,551 = 220,551 : x
  2. Step 2: Convert to fraction form
    142,443/220,551 = 220,551/x
  3. Step 3: Cross multiply
    142,443x = 220,551 × 220,551
  4. Step 4: Simplify right side
    142,443x = 48,642,743,601
  5. Step 5: Solve for x
    x = 48,642,743,601/142,443
  6. Step 6: Final answer
    x = 341,489.18

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.