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Finding the Third Proportional to 129,209 and 274,074

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Solution

The third proportional to 129,209 and 274,074 is: 581,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,209 : 274,074 = 274,074 : x
  2. Step 2: Convert to fraction form
    129,209/274,074 = 274,074/x
  3. Step 3: Cross multiply
    129,209x = 274,074 × 274,074
  4. Step 4: Simplify right side
    129,209x = 75,116,557,476
  5. Step 5: Solve for x
    x = 75,116,557,476/129,209
  6. Step 6: Final answer
    x = 581,357.01

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.