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Finding the Fourth Proportional to 143,745.28, 215,619.36 and 50,253.28

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Solution

The fourth proportional to 143,745.28, 215,619.36 and 50,253.28 is: 75,380.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,745.28 : 215,619.36 = 50,253.28 : x
  2. Step 2: Convert to fraction form
    143,745.28/215,619.36 = 50,253.28/x
  3. Step 3: Cross multiply
    143,745.28x = 215,619.36 × 50,253.28
  4. Step 4: Simplify right side
    143,745.28x = 10,835,580,071.50
  5. Step 5: Solve for x
    x = 10,835,580,071.50/143,745.28
  6. Step 6: Final answer
    x = 75,380.42

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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.