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Finding the Third Proportional to 121,234.50 and 263,205

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Solution

The third proportional to 121,234.50 and 263,205 is: 571,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,234.50 : 263,205 = 263,205 : x
  2. Step 2: Convert to fraction form
    121,234.50/263,205 = 263,205/x
  3. Step 3: Cross multiply
    121,234.50x = 263,205 × 263,205
  4. Step 4: Simplify right side
    121,234.50x = 69,276,872,025
  5. Step 5: Solve for x
    x = 69,276,872,025/121,234.50
  6. Step 6: Final answer
    x = 571,428.69

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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.