Home / 330,731.72-496,086.60-143,743.40

Finding the Fourth Proportional to 330,731.72, 496,086.60 and 143,743.40

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Solution

The fourth proportional to 330,731.72, 496,086.60 and 143,743.40 is: 215,610.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,731.72 : 496,086.60 = 143,743.40 : x
  2. Step 2: Convert to fraction form
    330,731.72/496,086.60 = 143,743.40/x
  3. Step 3: Cross multiply
    330,731.72x = 496,086.60 × 143,743.40
  4. Step 4: Simplify right side
    330,731.72x = 71,309,174,578.44
  5. Step 5: Solve for x
    x = 71,309,174,578.44/330,731.72
  6. Step 6: Final answer
    x = 215,610.33

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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.