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Finding the Fourth Proportional to 239,993.82, 359,869.73 and 80,012.97

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Solution

The fourth proportional to 239,993.82, 359,869.73 and 80,012.97 is: 119,979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,993.82 : 359,869.73 = 80,012.97 : x
  2. Step 2: Convert to fraction form
    239,993.82/359,869.73 = 80,012.97/x
  3. Step 3: Cross multiply
    239,993.82x = 359,869.73 × 80,012.97
  4. Step 4: Simplify right side
    239,993.82x = 28,794,245,510.33
  5. Step 5: Solve for x
    x = 28,794,245,510.33/239,993.82
  6. Step 6: Final answer
    x = 119,979.11

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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.