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Finding the Third Proportional to 250,524 and 387,990

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Solution

The third proportional to 250,524 and 387,990 is: 600,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,524 : 387,990 = 387,990 : x
  2. Step 2: Convert to fraction form
    250,524/387,990 = 387,990/x
  3. Step 3: Cross multiply
    250,524x = 387,990 × 387,990
  4. Step 4: Simplify right side
    250,524x = 150,536,240,100
  5. Step 5: Solve for x
    x = 150,536,240,100/250,524
  6. Step 6: Final answer
    x = 600,885.50

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.