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Finding the Third Proportional to 120,530 and 260,500

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Solution

The third proportional to 120,530 and 260,500 is: 563,015.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,530 : 260,500 = 260,500 : x
  2. Step 2: Convert to fraction form
    120,530/260,500 = 260,500/x
  3. Step 3: Cross multiply
    120,530x = 260,500 × 260,500
  4. Step 4: Simplify right side
    120,530x = 67,860,250,000
  5. Step 5: Solve for x
    x = 67,860,250,000/120,530
  6. Step 6: Final answer
    x = 563,015.43

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.