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Finding the Fourth Proportional to 215,871.92, 323,917.07 and 143,873.96

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Solution

The fourth proportional to 215,871.92, 323,917.07 and 143,873.96 is: 215,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,871.92 : 323,917.07 = 143,873.96 : x
  2. Step 2: Convert to fraction form
    215,871.92/323,917.07 = 143,873.96/x
  3. Step 3: Cross multiply
    215,871.92x = 323,917.07 × 143,873.96
  4. Step 4: Simplify right side
    215,871.92x = 46,603,231,572.50
  5. Step 5: Solve for x
    x = 46,603,231,572.50/215,871.92
  6. Step 6: Final answer
    x = 215,883.71

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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.