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Finding the Fourth Proportional to 483,880, 667,754.40 and 271,912

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Solution

The fourth proportional to 483,880, 667,754.40 and 271,912 is: 375,238.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,880 : 667,754.40 = 271,912 : x
  2. Step 2: Convert to fraction form
    483,880/667,754.40 = 271,912/x
  3. Step 3: Cross multiply
    483,880x = 667,754.40 × 271,912
  4. Step 4: Simplify right side
    483,880x = 181,570,434,412.80
  5. Step 5: Solve for x
    x = 181,570,434,412.80/483,880
  6. Step 6: Final answer
    x = 375,238.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.