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Finding the Third Proportional to 185,278.50 and 399,339

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Solution

The third proportional to 185,278.50 and 399,339 is: 860,713.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,278.50 : 399,339 = 399,339 : x
  2. Step 2: Convert to fraction form
    185,278.50/399,339 = 399,339/x
  3. Step 3: Cross multiply
    185,278.50x = 399,339 × 399,339
  4. Step 4: Simplify right side
    185,278.50x = 159,471,636,921
  5. Step 5: Solve for x
    x = 159,471,636,921/185,278.50
  6. Step 6: Final answer
    x = 860,713.13

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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.