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Finding the Third Proportional to 188,009 and 385,188

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Solution

The third proportional to 188,009 and 385,188 is: 789,163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,009 : 385,188 = 385,188 : x
  2. Step 2: Convert to fraction form
    188,009/385,188 = 385,188/x
  3. Step 3: Cross multiply
    188,009x = 385,188 × 385,188
  4. Step 4: Simplify right side
    188,009x = 148,369,795,344
  5. Step 5: Solve for x
    x = 148,369,795,344/188,009
  6. Step 6: Final answer
    x = 789,163.26

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.