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Finding the Third Proportional to 181,008 and 397,440

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Solution

The third proportional to 181,008 and 397,440 is: 872,660.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,008 : 397,440 = 397,440 : x
  2. Step 2: Convert to fraction form
    181,008/397,440 = 397,440/x
  3. Step 3: Cross multiply
    181,008x = 397,440 × 397,440
  4. Step 4: Simplify right side
    181,008x = 157,958,553,600
  5. Step 5: Solve for x
    x = 157,958,553,600/181,008
  6. Step 6: Final answer
    x = 872,660.62

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.