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Finding the Fourth Proportional to 276,270.67, 381,226.80 and 155,453.77

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Solution

The fourth proportional to 276,270.67, 381,226.80 and 155,453.77 is: 214,511.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,270.67 : 381,226.80 = 155,453.77 : x
  2. Step 2: Convert to fraction form
    276,270.67/381,226.80 = 155,453.77/x
  3. Step 3: Cross multiply
    276,270.67x = 381,226.80 × 155,453.77
  4. Step 4: Simplify right side
    276,270.67x = 59,263,143,285.04
  5. Step 5: Solve for x
    x = 59,263,143,285.04/276,270.67
  6. Step 6: Final answer
    x = 214,511.17

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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.