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Finding the Third Proportional to 279,538 and 372,434

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Solution

The third proportional to 279,538 and 372,434 is: 496,201.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,538 : 372,434 = 372,434 : x
  2. Step 2: Convert to fraction form
    279,538/372,434 = 372,434/x
  3. Step 3: Cross multiply
    279,538x = 372,434 × 372,434
  4. Step 4: Simplify right side
    279,538x = 138,707,084,356
  5. Step 5: Solve for x
    x = 138,707,084,356/279,538
  6. Step 6: Final answer
    x = 496,201.18

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.