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Finding the Fourth Proportional to 331,231.96, 496,930.74 and 131,486.32

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Solution

The fourth proportional to 331,231.96, 496,930.74 and 131,486.32 is: 197,262.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,231.96 : 496,930.74 = 131,486.32 : x
  2. Step 2: Convert to fraction form
    331,231.96/496,930.74 = 131,486.32/x
  3. Step 3: Cross multiply
    331,231.96x = 496,930.74 × 131,486.32
  4. Step 4: Simplify right side
    331,231.96x = 65,339,594,297.48
  5. Step 5: Solve for x
    x = 65,339,594,297.48/331,231.96
  6. Step 6: Final answer
    x = 197,262.35

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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.