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Finding the Third Proportional to 180,713 and 388,912

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Solution

The third proportional to 180,713 and 388,912 is: 836,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,713 : 388,912 = 388,912 : x
  2. Step 2: Convert to fraction form
    180,713/388,912 = 388,912/x
  3. Step 3: Cross multiply
    180,713x = 388,912 × 388,912
  4. Step 4: Simplify right side
    180,713x = 151,252,543,744
  5. Step 5: Solve for x
    x = 151,252,543,744/180,713
  6. Step 6: Final answer
    x = 836,976.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.