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Finding the Third Proportional to 231,905 and 330,739

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Solution

The third proportional to 231,905 and 330,739 is: 471,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,905 : 330,739 = 330,739 : x
  2. Step 2: Convert to fraction form
    231,905/330,739 = 330,739/x
  3. Step 3: Cross multiply
    231,905x = 330,739 × 330,739
  4. Step 4: Simplify right side
    231,905x = 109,388,286,121
  5. Step 5: Solve for x
    x = 109,388,286,121/231,905
  6. Step 6: Final answer
    x = 471,694.38

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.