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Finding the Third Proportional to 185,268 and 399,912

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Solution

The third proportional to 185,268 and 399,912 is: 863,233.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,268 : 399,912 = 399,912 : x
  2. Step 2: Convert to fraction form
    185,268/399,912 = 399,912/x
  3. Step 3: Cross multiply
    185,268x = 399,912 × 399,912
  4. Step 4: Simplify right side
    185,268x = 159,929,607,744
  5. Step 5: Solve for x
    x = 159,929,607,744/185,268
  6. Step 6: Final answer
    x = 863,233.84

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.