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Finding the Fourth Proportional to 143,843.81, 215,765.41 and 38,662.78

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Solution

The fourth proportional to 143,843.81, 215,765.41 and 38,662.78 is: 57,994.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,843.81 : 215,765.41 = 38,662.78 : x
  2. Step 2: Convert to fraction form
    143,843.81/215,765.41 = 38,662.78/x
  3. Step 3: Cross multiply
    143,843.81x = 215,765.41 × 38,662.78
  4. Step 4: Simplify right side
    143,843.81x = 8,342,090,578.44
  5. Step 5: Solve for x
    x = 8,342,090,578.44/143,843.81
  6. Step 6: Final answer
    x = 57,994.09

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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.