Home / 329,458.12-494,183.58-80,140.36

Finding the Fourth Proportional to 329,458.12, 494,183.58 and 80,140.36

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Solution

The fourth proportional to 329,458.12, 494,183.58 and 80,140.36 is: 120,209.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,458.12 : 494,183.58 = 80,140.36 : x
  2. Step 2: Convert to fraction form
    329,458.12/494,183.58 = 80,140.36/x
  3. Step 3: Cross multiply
    329,458.12x = 494,183.58 × 80,140.36
  4. Step 4: Simplify right side
    329,458.12x = 39,604,050,007.29
  5. Step 5: Solve for x
    x = 39,604,050,007.29/329,458.12
  6. Step 6: Final answer
    x = 120,209.66

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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.