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Finding the Third Proportional to 149,728 and 220,186

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Solution

The third proportional to 149,728 and 220,186 is: 323,799.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,728 : 220,186 = 220,186 : x
  2. Step 2: Convert to fraction form
    149,728/220,186 = 220,186/x
  3. Step 3: Cross multiply
    149,728x = 220,186 × 220,186
  4. Step 4: Simplify right side
    149,728x = 48,481,874,596
  5. Step 5: Solve for x
    x = 48,481,874,596/149,728
  6. Step 6: Final answer
    x = 323,799.65

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.