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Finding the Third Proportional to 121,229.75 and 263,443.50

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Solution

The third proportional to 121,229.75 and 263,443.50 is: 572,487.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,229.75 : 263,443.50 = 263,443.50 : x
  2. Step 2: Convert to fraction form
    121,229.75/263,443.50 = 263,443.50/x
  3. Step 3: Cross multiply
    121,229.75x = 263,443.50 × 263,443.50
  4. Step 4: Simplify right side
    121,229.75x = 69,402,477,692.25
  5. Step 5: Solve for x
    x = 69,402,477,692.25/121,229.75
  6. Step 6: Final answer
    x = 572,487.18

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.