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Finding the Third Proportional to 250,503 and 387,423

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Solution

The third proportional to 250,503 and 387,423 is: 599,180.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,503 : 387,423 = 387,423 : x
  2. Step 2: Convert to fraction form
    250,503/387,423 = 387,423/x
  3. Step 3: Cross multiply
    250,503x = 387,423 × 387,423
  4. Step 4: Simplify right side
    250,503x = 150,096,580,929
  5. Step 5: Solve for x
    x = 150,096,580,929/250,503
  6. Step 6: Final answer
    x = 599,180.77

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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.