Home / 330,942.72-496,121.28-131,402.88

Finding the Fourth Proportional to 330,942.72, 496,121.28 and 131,402.88

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Solution

The fourth proportional to 330,942.72, 496,121.28 and 131,402.88 is: 196,988.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,942.72 : 496,121.28 = 131,402.88 : x
  2. Step 2: Convert to fraction form
    330,942.72/496,121.28 = 131,402.88/x
  3. Step 3: Cross multiply
    330,942.72x = 496,121.28 × 131,402.88
  4. Step 4: Simplify right side
    330,942.72x = 65,191,765,021.29
  5. Step 5: Solve for x
    x = 65,191,765,021.29/330,942.72
  6. Step 6: Final answer
    x = 196,988.06

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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.