Home / 381,631.56-571,698.83-221,370.80

Finding the Fourth Proportional to 381,631.56, 571,698.83 and 221,370.80

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Solution

The fourth proportional to 381,631.56, 571,698.83 and 221,370.80 is: 331,622.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,631.56 : 571,698.83 = 221,370.80 : x
  2. Step 2: Convert to fraction form
    381,631.56/571,698.83 = 221,370.80/x
  3. Step 3: Cross multiply
    381,631.56x = 571,698.83 × 221,370.80
  4. Step 4: Simplify right side
    381,631.56x = 126,557,423,390.82
  5. Step 5: Solve for x
    x = 126,557,423,390.82/381,631.56
  6. Step 6: Final answer
    x = 331,622.01

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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.