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Finding the Third Proportional to 207,920 and 310,496

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Solution

The third proportional to 207,920 and 310,496 is: 463,677.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,920 : 310,496 = 310,496 : x
  2. Step 2: Convert to fraction form
    207,920/310,496 = 310,496/x
  3. Step 3: Cross multiply
    207,920x = 310,496 × 310,496
  4. Step 4: Simplify right side
    207,920x = 96,407,766,016
  5. Step 5: Solve for x
    x = 96,407,766,016/207,920
  6. Step 6: Final answer
    x = 463,677.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.