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Finding the Third Proportional to 218,715 and 454,879

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Solution

The third proportional to 218,715 and 454,879 is: 946,048.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,715 : 454,879 = 454,879 : x
  2. Step 2: Convert to fraction form
    218,715/454,879 = 454,879/x
  3. Step 3: Cross multiply
    218,715x = 454,879 × 454,879
  4. Step 4: Simplify right side
    218,715x = 206,914,904,641
  5. Step 5: Solve for x
    x = 206,914,904,641/218,715
  6. Step 6: Final answer
    x = 946,048.07

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.