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Finding the Third Proportional to 239,716 and 521,692

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Solution

The third proportional to 239,716 and 521,692 is: 1,135,354.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,716 : 521,692 = 521,692 : x
  2. Step 2: Convert to fraction form
    239,716/521,692 = 521,692/x
  3. Step 3: Cross multiply
    239,716x = 521,692 × 521,692
  4. Step 4: Simplify right side
    239,716x = 272,162,542,864
  5. Step 5: Solve for x
    x = 272,162,542,864/239,716
  6. Step 6: Final answer
    x = 1,135,354.10

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.