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Finding the Fourth Proportional to 325,364.20, 488,063.74 and 100,879.72

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Solution

The fourth proportional to 325,364.20, 488,063.74 and 100,879.72 is: 151,324.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,364.20 : 488,063.74 = 100,879.72 : x
  2. Step 2: Convert to fraction form
    325,364.20/488,063.74 = 100,879.72/x
  3. Step 3: Cross multiply
    325,364.20x = 488,063.74 × 100,879.72
  4. Step 4: Simplify right side
    325,364.20x = 49,235,733,433.35
  5. Step 5: Solve for x
    x = 49,235,733,433.35/325,364.20
  6. Step 6: Final answer
    x = 151,324.99

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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.