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Finding the Third Proportional to 260,516.25 and 389,679.75

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Solution

The third proportional to 260,516.25 and 389,679.75 is: 582,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,516.25 : 389,679.75 = 389,679.75 : x
  2. Step 2: Convert to fraction form
    260,516.25/389,679.75 = 389,679.75/x
  3. Step 3: Cross multiply
    260,516.25x = 389,679.75 × 389,679.75
  4. Step 4: Simplify right side
    260,516.25x = 151,850,307,560.06
  5. Step 5: Solve for x
    x = 151,850,307,560.06/260,516.25
  6. Step 6: Final answer
    x = 582,882.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.