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Finding the Third Proportional to 139,272 and 306,192

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Solution

The third proportional to 139,272 and 306,192 is: 673,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,272 : 306,192 = 306,192 : x
  2. Step 2: Convert to fraction form
    139,272/306,192 = 306,192/x
  3. Step 3: Cross multiply
    139,272x = 306,192 × 306,192
  4. Step 4: Simplify right side
    139,272x = 93,753,540,864
  5. Step 5: Solve for x
    x = 93,753,540,864/139,272
  6. Step 6: Final answer
    x = 673,168.63

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.