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Finding the Third Proportional to 185,980 and 278,251

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Solution

The third proportional to 185,980 and 278,251 is: 416,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,980 : 278,251 = 278,251 : x
  2. Step 2: Convert to fraction form
    185,980/278,251 = 278,251/x
  3. Step 3: Cross multiply
    185,980x = 278,251 × 278,251
  4. Step 4: Simplify right side
    185,980x = 77,423,619,001
  5. Step 5: Solve for x
    x = 77,423,619,001/185,980
  6. Step 6: Final answer
    x = 416,300.78

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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.