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Finding the Fourth Proportional to 172,997.42, 238,645.79 and 150,285.42

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Solution

The fourth proportional to 172,997.42, 238,645.79 and 150,285.42 is: 207,315.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,997.42 : 238,645.79 = 150,285.42 : x
  2. Step 2: Convert to fraction form
    172,997.42/238,645.79 = 150,285.42/x
  3. Step 3: Cross multiply
    172,997.42x = 238,645.79 × 150,285.42
  4. Step 4: Simplify right side
    172,997.42x = 35,864,982,626.57
  5. Step 5: Solve for x
    x = 35,864,982,626.57/172,997.42
  6. Step 6: Final answer
    x = 207,315.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.