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Finding the Third Proportional to 207,966 and 316,326

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Solution

The third proportional to 207,966 and 316,326 is: 481,146.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,966 : 316,326 = 316,326 : x
  2. Step 2: Convert to fraction form
    207,966/316,326 = 316,326/x
  3. Step 3: Cross multiply
    207,966x = 316,326 × 316,326
  4. Step 4: Simplify right side
    207,966x = 100,062,138,276
  5. Step 5: Solve for x
    x = 100,062,138,276/207,966
  6. Step 6: Final answer
    x = 481,146.62

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.