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Finding the Third Proportional to 154,449 and 338,421

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Solution

The third proportional to 154,449 and 338,421 is: 741,531.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,449 : 338,421 = 338,421 : x
  2. Step 2: Convert to fraction form
    154,449/338,421 = 338,421/x
  3. Step 3: Cross multiply
    154,449x = 338,421 × 338,421
  4. Step 4: Simplify right side
    154,449x = 114,528,773,241
  5. Step 5: Solve for x
    x = 114,528,773,241/154,449
  6. Step 6: Final answer
    x = 741,531.34

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.