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Finding the Third Proportional to 138,937.50 and 215,270.25

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Solution

The third proportional to 138,937.50 and 215,270.25 is: 333,540.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,937.50 : 215,270.25 = 215,270.25 : x
  2. Step 2: Convert to fraction form
    138,937.50/215,270.25 = 215,270.25/x
  3. Step 3: Cross multiply
    138,937.50x = 215,270.25 × 215,270.25
  4. Step 4: Simplify right side
    138,937.50x = 46,341,280,535.06
  5. Step 5: Solve for x
    x = 46,341,280,535.06/138,937.50
  6. Step 6: Final answer
    x = 333,540.48

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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.