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Finding the Fourth Proportional to 381,271.28, 571,994.78 and 131,953.28

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Solution

The fourth proportional to 381,271.28, 571,994.78 and 131,953.28 is: 197,960.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,271.28 : 571,994.78 = 131,953.28 : x
  2. Step 2: Convert to fraction form
    381,271.28/571,994.78 = 131,953.28/x
  3. Step 3: Cross multiply
    381,271.28x = 571,994.78 × 131,953.28
  4. Step 4: Simplify right side
    381,271.28x = 75,476,587,363.88
  5. Step 5: Solve for x
    x = 75,476,587,363.88/381,271.28
  6. Step 6: Final answer
    x = 197,960.33

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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.