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Finding the Third Proportional to 129,904 and 206,864

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Solution

The third proportional to 129,904 and 206,864 is: 329,417.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,904 : 206,864 = 206,864 : x
  2. Step 2: Convert to fraction form
    129,904/206,864 = 206,864/x
  3. Step 3: Cross multiply
    129,904x = 206,864 × 206,864
  4. Step 4: Simplify right side
    129,904x = 42,792,714,496
  5. Step 5: Solve for x
    x = 42,792,714,496/129,904
  6. Step 6: Final answer
    x = 329,417.99

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.