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Finding the Third Proportional to 253,638 and 379,665

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Solution

The third proportional to 253,638 and 379,665 is: 568,311.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,638 : 379,665 = 379,665 : x
  2. Step 2: Convert to fraction form
    253,638/379,665 = 379,665/x
  3. Step 3: Cross multiply
    253,638x = 379,665 × 379,665
  4. Step 4: Simplify right side
    253,638x = 144,145,512,225
  5. Step 5: Solve for x
    x = 144,145,512,225/253,638
  6. Step 6: Final answer
    x = 568,311.97

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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.