Home / 255,531.30-383,269.60-78,161.95

Finding the Fourth Proportional to 255,531.30, 383,269.60 and 78,161.95

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Solution

The fourth proportional to 255,531.30, 383,269.60 and 78,161.95 is: 117,234.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,531.30 : 383,269.60 = 78,161.95 : x
  2. Step 2: Convert to fraction form
    255,531.30/383,269.60 = 78,161.95/x
  3. Step 3: Cross multiply
    255,531.30x = 383,269.60 × 78,161.95
  4. Step 4: Simplify right side
    255,531.30x = 29,957,099,311.72
  5. Step 5: Solve for x
    x = 29,957,099,311.72/255,531.30
  6. Step 6: Final answer
    x = 117,234.56

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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.