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Finding the Fourth Proportional to 331,374.80, 496,932.60 and 120,904.40

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Solution

The fourth proportional to 331,374.80, 496,932.60 and 120,904.40 is: 181,309.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,374.80 : 496,932.60 = 120,904.40 : x
  2. Step 2: Convert to fraction form
    331,374.80/496,932.60 = 120,904.40/x
  3. Step 3: Cross multiply
    331,374.80x = 496,932.60 × 120,904.40
  4. Step 4: Simplify right side
    331,374.80x = 60,081,337,843.44
  5. Step 5: Solve for x
    x = 60,081,337,843.44/331,374.80
  6. Step 6: Final answer
    x = 181,309.31

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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.