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Finding the Fourth Proportional to 331,151.74, 496,801.68 and 120,789.68

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Solution

The fourth proportional to 331,151.74, 496,801.68 and 120,789.68 is: 181,211.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,151.74 : 496,801.68 = 120,789.68 : x
  2. Step 2: Convert to fraction form
    331,151.74/496,801.68 = 120,789.68/x
  3. Step 3: Cross multiply
    331,151.74x = 496,801.68 × 120,789.68
  4. Step 4: Simplify right side
    331,151.74x = 60,008,515,950.66
  5. Step 5: Solve for x
    x = 60,008,515,950.66/331,151.74
  6. Step 6: Final answer
    x = 181,211.54

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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.