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Finding the Third Proportional to 102,245 and 209,449

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Solution

The third proportional to 102,245 and 209,449 is: 429,056.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,245 : 209,449 = 209,449 : x
  2. Step 2: Convert to fraction form
    102,245/209,449 = 209,449/x
  3. Step 3: Cross multiply
    102,245x = 209,449 × 209,449
  4. Step 4: Simplify right side
    102,245x = 43,868,883,601
  5. Step 5: Solve for x
    x = 43,868,883,601/102,245
  6. Step 6: Final answer
    x = 429,056.52

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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.