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Finding the Third Proportional to 217,469 and 306,246

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Solution

The third proportional to 217,469 and 306,246 is: 431,264.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,469 : 306,246 = 306,246 : x
  2. Step 2: Convert to fraction form
    217,469/306,246 = 306,246/x
  3. Step 3: Cross multiply
    217,469x = 306,246 × 306,246
  4. Step 4: Simplify right side
    217,469x = 93,786,612,516
  5. Step 5: Solve for x
    x = 93,786,612,516/217,469
  6. Step 6: Final answer
    x = 431,264.28

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.