Home / 331,233.20-496,849.80-81,915.20

Finding the Fourth Proportional to 331,233.20, 496,849.80 and 81,915.20

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Solution

The fourth proportional to 331,233.20, 496,849.80 and 81,915.20 is: 122,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,233.20 : 496,849.80 = 81,915.20 : x
  2. Step 2: Convert to fraction form
    331,233.20/496,849.80 = 81,915.20/x
  3. Step 3: Cross multiply
    331,233.20x = 496,849.80 × 81,915.20
  4. Step 4: Simplify right side
    331,233.20x = 40,699,550,736.96
  5. Step 5: Solve for x
    x = 40,699,550,736.96/331,233.20
  6. Step 6: Final answer
    x = 122,872.80

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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.