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Finding the Fourth Proportional to 360,399.80, 540,869 and 135,981.56

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Solution

The fourth proportional to 360,399.80, 540,869 and 135,981.56 is: 204,073.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,399.80 : 540,869 = 135,981.56 : x
  2. Step 2: Convert to fraction form
    360,399.80/540,869 = 135,981.56/x
  3. Step 3: Cross multiply
    360,399.80x = 540,869 × 135,981.56
  4. Step 4: Simplify right side
    360,399.80x = 73,548,210,375.64
  5. Step 5: Solve for x
    x = 73,548,210,375.64/360,399.80
  6. Step 6: Final answer
    x = 204,073.95

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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.