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Finding the Fourth Proportional to 276,391.97, 381,419.70 and 155,535.27

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Solution

The fourth proportional to 276,391.97, 381,419.70 and 155,535.27 is: 214,637.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,391.97 : 381,419.70 = 155,535.27 : x
  2. Step 2: Convert to fraction form
    276,391.97/381,419.70 = 155,535.27/x
  3. Step 3: Cross multiply
    276,391.97x = 381,419.70 × 155,535.27
  4. Step 4: Simplify right side
    276,391.97x = 59,324,216,022.82
  5. Step 5: Solve for x
    x = 59,324,216,022.82/276,391.97
  6. Step 6: Final answer
    x = 214,637.99

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1.5x scale

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.