Home / 321,278.75-481,760.18-131,687.72

Finding the Fourth Proportional to 321,278.75, 481,760.18 and 131,687.72

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Solution

The fourth proportional to 321,278.75, 481,760.18 and 131,687.72 is: 197,466.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,278.75 : 481,760.18 = 131,687.72 : x
  2. Step 2: Convert to fraction form
    321,278.75/481,760.18 = 131,687.72/x
  3. Step 3: Cross multiply
    321,278.75x = 481,760.18 × 131,687.72
  4. Step 4: Simplify right side
    321,278.75x = 63,441,899,690.99
  5. Step 5: Solve for x
    x = 63,441,899,690.99/321,278.75
  6. Step 6: Final answer
    x = 197,466.84

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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.