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Finding the Third Proportional to 137,850 and 212,769

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Solution

The third proportional to 137,850 and 212,769 is: 328,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,850 : 212,769 = 212,769 : x
  2. Step 2: Convert to fraction form
    137,850/212,769 = 212,769/x
  3. Step 3: Cross multiply
    137,850x = 212,769 × 212,769
  4. Step 4: Simplify right side
    137,850x = 45,270,647,361
  5. Step 5: Solve for x
    x = 45,270,647,361/137,850
  6. Step 6: Final answer
    x = 328,405.13

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.