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Finding the Fourth Proportional to 143,540.44, 215,356.76 and 43,719.96

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Solution

The fourth proportional to 143,540.44, 215,356.76 and 43,719.96 is: 65,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,540.44 : 215,356.76 = 43,719.96 : x
  2. Step 2: Convert to fraction form
    143,540.44/215,356.76 = 43,719.96/x
  3. Step 3: Cross multiply
    143,540.44x = 215,356.76 × 43,719.96
  4. Step 4: Simplify right side
    143,540.44x = 9,415,388,932.93
  5. Step 5: Solve for x
    x = 9,415,388,932.93/143,540.44
  6. Step 6: Final answer
    x = 65,593.98

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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.