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Finding the Third Proportional to 108,290 and 168,324

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Solution

The third proportional to 108,290 and 168,324 is: 261,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,290 : 168,324 = 168,324 : x
  2. Step 2: Convert to fraction form
    108,290/168,324 = 168,324/x
  3. Step 3: Cross multiply
    108,290x = 168,324 × 168,324
  4. Step 4: Simplify right side
    108,290x = 28,332,968,976
  5. Step 5: Solve for x
    x = 28,332,968,976/108,290
  6. Step 6: Final answer
    x = 261,639.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.