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Finding the Third Proportional to 158,920 and 330,908

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Solution

The third proportional to 158,920 and 330,908 is: 689,026.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,920 : 330,908 = 330,908 : x
  2. Step 2: Convert to fraction form
    158,920/330,908 = 330,908/x
  3. Step 3: Cross multiply
    158,920x = 330,908 × 330,908
  4. Step 4: Simplify right side
    158,920x = 109,500,104,464
  5. Step 5: Solve for x
    x = 109,500,104,464/158,920
  6. Step 6: Final answer
    x = 689,026.58

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.