Home / 381,198.05-571,799.04-128,480.73

Finding the Fourth Proportional to 381,198.05, 571,799.04 and 128,480.73

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Solution

The fourth proportional to 381,198.05, 571,799.04 and 128,480.73 is: 192,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,198.05 : 571,799.04 = 128,480.73 : x
  2. Step 2: Convert to fraction form
    381,198.05/571,799.04 = 128,480.73/x
  3. Step 3: Cross multiply
    381,198.05x = 571,799.04 × 128,480.73
  4. Step 4: Simplify right side
    381,198.05x = 73,465,158,072.50
  5. Step 5: Solve for x
    x = 73,465,158,072.50/381,198.05
  6. Step 6: Final answer
    x = 192,721.76

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1.5x scale

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.