Home / 305,022.03-457,493.95-80,400.12

Finding the Fourth Proportional to 305,022.03, 457,493.95 and 80,400.12

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Solution

The fourth proportional to 305,022.03, 457,493.95 and 80,400.12 is: 120,589.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,022.03 : 457,493.95 = 80,400.12 : x
  2. Step 2: Convert to fraction form
    305,022.03/457,493.95 = 80,400.12/x
  3. Step 3: Cross multiply
    305,022.03x = 457,493.95 × 80,400.12
  4. Step 4: Simplify right side
    305,022.03x = 36,782,568,479.27
  5. Step 5: Solve for x
    x = 36,782,568,479.27/305,022.03
  6. Step 6: Final answer
    x = 120,589.88

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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.