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Finding the Third Proportional to 209,650.50 and 279,321.75

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Solution

The third proportional to 209,650.50 and 279,321.75 is: 372,146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,650.50 : 279,321.75 = 279,321.75 : x
  2. Step 2: Convert to fraction form
    209,650.50/279,321.75 = 279,321.75/x
  3. Step 3: Cross multiply
    209,650.50x = 279,321.75 × 279,321.75
  4. Step 4: Simplify right side
    209,650.50x = 78,020,640,023.06
  5. Step 5: Solve for x
    x = 78,020,640,023.06/209,650.50
  6. Step 6: Final answer
    x = 372,146.21

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.