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Finding the Fourth Proportional to 143,672.40, 215,491.92 and 38,499.84

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Solution

The fourth proportional to 143,672.40, 215,491.92 and 38,499.84 is: 57,745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,672.40 : 215,491.92 = 38,499.84 : x
  2. Step 2: Convert to fraction form
    143,672.40/215,491.92 = 38,499.84/x
  3. Step 3: Cross multiply
    143,672.40x = 215,491.92 × 38,499.84
  4. Step 4: Simplify right side
    143,672.40x = 8,296,404,441.29
  5. Step 5: Solve for x
    x = 8,296,404,441.29/143,672.40
  6. Step 6: Final answer
    x = 57,745.29

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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.