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Finding the Third Proportional to 161,878 and 355,878

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Solution

The third proportional to 161,878 and 355,878 is: 782,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,878 : 355,878 = 355,878 : x
  2. Step 2: Convert to fraction form
    161,878/355,878 = 355,878/x
  3. Step 3: Cross multiply
    161,878x = 355,878 × 355,878
  4. Step 4: Simplify right side
    161,878x = 126,649,150,884
  5. Step 5: Solve for x
    x = 126,649,150,884/161,878
  6. Step 6: Final answer
    x = 782,374.08

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.