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Finding the Fourth Proportional to 308,163.86, 425,257.97 and 172,198.93

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Solution

The fourth proportional to 308,163.86, 425,257.97 and 172,198.93 is: 237,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,163.86 : 425,257.97 = 172,198.93 : x
  2. Step 2: Convert to fraction form
    308,163.86/425,257.97 = 172,198.93/x
  3. Step 3: Cross multiply
    308,163.86x = 425,257.97 × 172,198.93
  4. Step 4: Simplify right side
    308,163.86x = 73,228,967,407.97
  5. Step 5: Solve for x
    x = 73,228,967,407.97/308,163.86
  6. Step 6: Final answer
    x = 237,629.97

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1.5x scale

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.