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Finding the Third Proportional to 102,251 and 209,459

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Solution

The third proportional to 102,251 and 209,459 is: 429,072.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,251 : 209,459 = 209,459 : x
  2. Step 2: Convert to fraction form
    102,251/209,459 = 209,459/x
  3. Step 3: Cross multiply
    102,251x = 209,459 × 209,459
  4. Step 4: Simplify right side
    102,251x = 43,873,072,681
  5. Step 5: Solve for x
    x = 43,873,072,681/102,251
  6. Step 6: Final answer
    x = 429,072.31

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.