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Finding the Third Proportional to 203,484 and 278,839

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Solution

The third proportional to 203,484 and 278,839 is: 382,099.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,484 : 278,839 = 278,839 : x
  2. Step 2: Convert to fraction form
    203,484/278,839 = 278,839/x
  3. Step 3: Cross multiply
    203,484x = 278,839 × 278,839
  4. Step 4: Simplify right side
    203,484x = 77,751,187,921
  5. Step 5: Solve for x
    x = 77,751,187,921/203,484
  6. Step 6: Final answer
    x = 382,099.76

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.