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Finding the Fourth Proportional to 276,392.70, 381,629.77 and 271,978.70

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Solution

The fourth proportional to 276,392.70, 381,629.77 and 271,978.70 is: 375,535.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,392.70 : 381,629.77 = 271,978.70 : x
  2. Step 2: Convert to fraction form
    276,392.70/381,629.77 = 271,978.70/x
  3. Step 3: Cross multiply
    276,392.70x = 381,629.77 × 271,978.70
  4. Step 4: Simplify right side
    276,392.70x = 103,795,166,137.80
  5. Step 5: Solve for x
    x = 103,795,166,137.80/276,392.70
  6. Step 6: Final answer
    x = 375,535.12

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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.