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Finding the Third Proportional to 172,489.50 and 267,421.50

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Solution

The third proportional to 172,489.50 and 267,421.50 is: 414,600.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,489.50 : 267,421.50 = 267,421.50 : x
  2. Step 2: Convert to fraction form
    172,489.50/267,421.50 = 267,421.50/x
  3. Step 3: Cross multiply
    172,489.50x = 267,421.50 × 267,421.50
  4. Step 4: Simplify right side
    172,489.50x = 71,514,258,662.25
  5. Step 5: Solve for x
    x = 71,514,258,662.25/172,489.50
  6. Step 6: Final answer
    x = 414,600.65

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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.