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Finding the Third Proportional to 260,115.75 and 388,410.75

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Solution

The third proportional to 260,115.75 and 388,410.75 is: 579,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,115.75 : 388,410.75 = 388,410.75 : x
  2. Step 2: Convert to fraction form
    260,115.75/388,410.75 = 388,410.75/x
  3. Step 3: Cross multiply
    260,115.75x = 388,410.75 × 388,410.75
  4. Step 4: Simplify right side
    260,115.75x = 150,862,910,715.56
  5. Step 5: Solve for x
    x = 150,862,910,715.56/260,115.75
  6. Step 6: Final answer
    x = 579,983.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.