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Finding the Third Proportional to 218,328 and 347,175

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Solution

The third proportional to 218,328 and 347,175 is: 552,061.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,328 : 347,175 = 347,175 : x
  2. Step 2: Convert to fraction form
    218,328/347,175 = 347,175/x
  3. Step 3: Cross multiply
    218,328x = 347,175 × 347,175
  4. Step 4: Simplify right side
    218,328x = 120,530,480,625
  5. Step 5: Solve for x
    x = 120,530,480,625/218,328
  6. Step 6: Final answer
    x = 552,061.49

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.