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Finding the Fourth Proportional to 276,471.50, 381,454.31 and 155,605.73

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Solution

The fourth proportional to 276,471.50, 381,454.31 and 155,605.73 is: 214,692.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,471.50 : 381,454.31 = 155,605.73 : x
  2. Step 2: Convert to fraction form
    276,471.50/381,454.31 = 155,605.73/x
  3. Step 3: Cross multiply
    276,471.50x = 381,454.31 × 155,605.73
  4. Step 4: Simplify right side
    276,471.50x = 59,356,474,850.94
  5. Step 5: Solve for x
    x = 59,356,474,850.94/276,471.50
  6. Step 6: Final answer
    x = 214,692.93

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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.