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Finding the Third Proportional to 161,867 and 355,855

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Solution

The third proportional to 161,867 and 355,855 is: 782,326.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,867 : 355,855 = 355,855 : x
  2. Step 2: Convert to fraction form
    161,867/355,855 = 355,855/x
  3. Step 3: Cross multiply
    161,867x = 355,855 × 355,855
  4. Step 4: Simplify right side
    161,867x = 126,632,781,025
  5. Step 5: Solve for x
    x = 126,632,781,025/161,867
  6. Step 6: Final answer
    x = 782,326.11

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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.