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Finding the Third Proportional to 168,939 and 363,879

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Solution

The third proportional to 168,939 and 363,879 is: 783,761.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,939 : 363,879 = 363,879 : x
  2. Step 2: Convert to fraction form
    168,939/363,879 = 363,879/x
  3. Step 3: Cross multiply
    168,939x = 363,879 × 363,879
  4. Step 4: Simplify right side
    168,939x = 132,407,926,641
  5. Step 5: Solve for x
    x = 132,407,926,641/168,939
  6. Step 6: Final answer
    x = 783,761.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.