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Finding the Fourth Proportional to 331,234.96, 496,860.64 and 120,872.88

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Solution

The fourth proportional to 331,234.96, 496,860.64 and 120,872.88 is: 181,312.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,234.96 : 496,860.64 = 120,872.88 : x
  2. Step 2: Convert to fraction form
    331,234.96/496,860.64 = 120,872.88/x
  3. Step 3: Cross multiply
    331,234.96x = 496,860.64 × 120,872.88
  4. Step 4: Simplify right side
    331,234.96x = 60,056,976,515.44
  5. Step 5: Solve for x
    x = 60,056,976,515.44/331,234.96
  6. Step 6: Final answer
    x = 181,312.31

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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.