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Finding the Third Proportional to 210,328 and 283,412

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Solution

The third proportional to 210,328 and 283,412 is: 381,890.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,328 : 283,412 = 283,412 : x
  2. Step 2: Convert to fraction form
    210,328/283,412 = 283,412/x
  3. Step 3: Cross multiply
    210,328x = 283,412 × 283,412
  4. Step 4: Simplify right side
    210,328x = 80,322,361,744
  5. Step 5: Solve for x
    x = 80,322,361,744/210,328
  6. Step 6: Final answer
    x = 381,890.96

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.