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Finding the Third Proportional to 180,999 and 397,685

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Solution

The third proportional to 180,999 and 397,685 is: 873,780.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,999 : 397,685 = 397,685 : x
  2. Step 2: Convert to fraction form
    180,999/397,685 = 397,685/x
  3. Step 3: Cross multiply
    180,999x = 397,685 × 397,685
  4. Step 4: Simplify right side
    180,999x = 158,153,359,225
  5. Step 5: Solve for x
    x = 158,153,359,225/180,999
  6. Step 6: Final answer
    x = 873,780.29

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.