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Finding the Third Proportional to 186,941 and 280,357

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Solution

The third proportional to 186,941 and 280,357 is: 420,453.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,941 : 280,357 = 280,357 : x
  2. Step 2: Convert to fraction form
    186,941/280,357 = 280,357/x
  3. Step 3: Cross multiply
    186,941x = 280,357 × 280,357
  4. Step 4: Simplify right side
    186,941x = 78,600,047,449
  5. Step 5: Solve for x
    x = 78,600,047,449/186,941
  6. Step 6: Final answer
    x = 420,453.77

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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.