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Finding the Fourth Proportional to 353,481.16, 530,238.12 and 100,778.80

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Solution

The fourth proportional to 353,481.16, 530,238.12 and 100,778.80 is: 151,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,481.16 : 530,238.12 = 100,778.80 : x
  2. Step 2: Convert to fraction form
    353,481.16/530,238.12 = 100,778.80/x
  3. Step 3: Cross multiply
    353,481.16x = 530,238.12 × 100,778.80
  4. Step 4: Simplify right side
    353,481.16x = 53,436,761,447.86
  5. Step 5: Solve for x
    x = 53,436,761,447.86/353,481.16
  6. Step 6: Final answer
    x = 151,172.87

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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.