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Finding the Fourth Proportional to 308,508.89, 425,745.52 and 181,186.61

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Solution

The fourth proportional to 308,508.89, 425,745.52 and 181,186.61 is: 250,039.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,508.89 : 425,745.52 = 181,186.61 : x
  2. Step 2: Convert to fraction form
    308,508.89/425,745.52 = 181,186.61/x
  3. Step 3: Cross multiply
    308,508.89x = 425,745.52 × 181,186.61
  4. Step 4: Simplify right side
    308,508.89x = 77,139,384,909.79
  5. Step 5: Solve for x
    x = 77,139,384,909.79/308,508.89
  6. Step 6: Final answer
    x = 250,039.43

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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.