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Finding the Third Proportional to 206,863 and 306,406

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Solution

The third proportional to 206,863 and 306,406 is: 453,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,863 : 306,406 = 306,406 : x
  2. Step 2: Convert to fraction form
    206,863/306,406 = 306,406/x
  3. Step 3: Cross multiply
    206,863x = 306,406 × 306,406
  4. Step 4: Simplify right side
    206,863x = 93,884,636,836
  5. Step 5: Solve for x
    x = 93,884,636,836/206,863
  6. Step 6: Final answer
    x = 453,849.34

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.