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Finding the Third Proportional to 180,558 and 280,890

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Solution

The third proportional to 180,558 and 280,890 is: 436,974.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,558 : 280,890 = 280,890 : x
  2. Step 2: Convert to fraction form
    180,558/280,890 = 280,890/x
  3. Step 3: Cross multiply
    180,558x = 280,890 × 280,890
  4. Step 4: Simplify right side
    180,558x = 78,899,192,100
  5. Step 5: Solve for x
    x = 78,899,192,100/180,558
  6. Step 6: Final answer
    x = 436,974.22

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.