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Finding the Third Proportional to 180,670.50 and 381,690

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Solution

The third proportional to 180,670.50 and 381,690 is: 806,369.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,670.50 : 381,690 = 381,690 : x
  2. Step 2: Convert to fraction form
    180,670.50/381,690 = 381,690/x
  3. Step 3: Cross multiply
    180,670.50x = 381,690 × 381,690
  4. Step 4: Simplify right side
    180,670.50x = 145,687,256,100
  5. Step 5: Solve for x
    x = 145,687,256,100/180,670.50
  6. Step 6: Final answer
    x = 806,369.92

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.