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Finding the Third Proportional to 170,874 and 268,434

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Solution

The third proportional to 170,874 and 268,434 is: 421,695.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,874 : 268,434 = 268,434 : x
  2. Step 2: Convert to fraction form
    170,874/268,434 = 268,434/x
  3. Step 3: Cross multiply
    170,874x = 268,434 × 268,434
  4. Step 4: Simplify right side
    170,874x = 72,056,812,356
  5. Step 5: Solve for x
    x = 72,056,812,356/170,874
  6. Step 6: Final answer
    x = 421,695.59

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.