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Finding the Third Proportional to 138,793.50 and 209,216.25

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Solution

The third proportional to 138,793.50 and 209,216.25 is: 315,370.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,793.50 : 209,216.25 = 209,216.25 : x
  2. Step 2: Convert to fraction form
    138,793.50/209,216.25 = 209,216.25/x
  3. Step 3: Cross multiply
    138,793.50x = 209,216.25 × 209,216.25
  4. Step 4: Simplify right side
    138,793.50x = 43,771,439,264.06
  5. Step 5: Solve for x
    x = 43,771,439,264.06/138,793.50
  6. Step 6: Final answer
    x = 315,370.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.