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Finding the Third Proportional to 149,721.75 and 328,429.13

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Solution

The third proportional to 149,721.75 and 328,429.13 is: 720,441.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,721.75 : 328,429.13 = 328,429.13 : x
  2. Step 2: Convert to fraction form
    149,721.75/328,429.13 = 328,429.13/x
  3. Step 3: Cross multiply
    149,721.75x = 328,429.13 × 328,429.13
  4. Step 4: Simplify right side
    149,721.75x = 107,865,690,148.27
  5. Step 5: Solve for x
    x = 107,865,690,148.27/149,721.75
  6. Step 6: Final answer
    x = 720,441.02

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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.