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Finding the Fourth Proportional to 332,408.40, 498,785.40 and 145,438.80

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Solution

The fourth proportional to 332,408.40, 498,785.40 and 145,438.80 is: 218,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,408.40 : 498,785.40 = 145,438.80 : x
  2. Step 2: Convert to fraction form
    332,408.40/498,785.40 = 145,438.80/x
  3. Step 3: Cross multiply
    332,408.40x = 498,785.40 × 145,438.80
  4. Step 4: Simplify right side
    332,408.40x = 72,542,750,033.52
  5. Step 5: Solve for x
    x = 72,542,750,033.52/332,408.40
  6. Step 6: Final answer
    x = 218,233.81

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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.