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Finding the Third Proportional to 84,530 and 171,382

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Solution

The third proportional to 84,530 and 171,382 is: 347,471.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,530 : 171,382 = 171,382 : x
  2. Step 2: Convert to fraction form
    84,530/171,382 = 171,382/x
  3. Step 3: Cross multiply
    84,530x = 171,382 × 171,382
  4. Step 4: Simplify right side
    84,530x = 29,371,789,924
  5. Step 5: Solve for x
    x = 29,371,789,924/84,530
  6. Step 6: Final answer
    x = 347,471.78

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.