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Finding the Third Proportional to 259,745 and 388,571

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Solution

The third proportional to 259,745 and 388,571 is: 581,290.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,745 : 388,571 = 388,571 : x
  2. Step 2: Convert to fraction form
    259,745/388,571 = 388,571/x
  3. Step 3: Cross multiply
    259,745x = 388,571 × 388,571
  4. Step 4: Simplify right side
    259,745x = 150,987,422,041
  5. Step 5: Solve for x
    x = 150,987,422,041/259,745
  6. Step 6: Final answer
    x = 581,290.97

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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.