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Finding the Fourth Proportional to 386,938.44, 580,135.50 and 150,081.48

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Solution

The fourth proportional to 386,938.44, 580,135.50 and 150,081.48 is: 225,016.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,938.44 : 580,135.50 = 150,081.48 : x
  2. Step 2: Convert to fraction form
    386,938.44/580,135.50 = 150,081.48/x
  3. Step 3: Cross multiply
    386,938.44x = 580,135.50 × 150,081.48
  4. Step 4: Simplify right side
    386,938.44x = 87,067,594,440.54
  5. Step 5: Solve for x
    x = 87,067,594,440.54/386,938.44
  6. Step 6: Final answer
    x = 225,016.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.