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Finding the Third Proportional to 137,451 and 212,828

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Solution

The third proportional to 137,451 and 212,828 is: 329,541.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,451 : 212,828 = 212,828 : x
  2. Step 2: Convert to fraction form
    137,451/212,828 = 212,828/x
  3. Step 3: Cross multiply
    137,451x = 212,828 × 212,828
  4. Step 4: Simplify right side
    137,451x = 45,295,757,584
  5. Step 5: Solve for x
    x = 45,295,757,584/137,451
  6. Step 6: Final answer
    x = 329,541.13

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.