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Finding the Fourth Proportional to 288,418.92, 432,469.81 and 88,683.85

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Solution

The fourth proportional to 288,418.92, 432,469.81 and 88,683.85 is: 132,977.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,418.92 : 432,469.81 = 88,683.85 : x
  2. Step 2: Convert to fraction form
    288,418.92/432,469.81 = 88,683.85/x
  3. Step 3: Cross multiply
    288,418.92x = 432,469.81 × 88,683.85
  4. Step 4: Simplify right side
    288,418.92x = 38,353,087,759.57
  5. Step 5: Solve for x
    x = 38,353,087,759.57/288,418.92
  6. Step 6: Final answer
    x = 132,977.02

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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.