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Finding the Fourth Proportional to 276,407.88, 381,450.24 and 155,553.48

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Solution

The fourth proportional to 276,407.88, 381,450.24 and 155,553.48 is: 214,667.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,407.88 : 381,450.24 = 155,553.48 : x
  2. Step 2: Convert to fraction form
    276,407.88/381,450.24 = 155,553.48/x
  3. Step 3: Cross multiply
    276,407.88x = 381,450.24 × 155,553.48
  4. Step 4: Simplify right side
    276,407.88x = 59,335,912,278.84
  5. Step 5: Solve for x
    x = 59,335,912,278.84/276,407.88
  6. Step 6: Final answer
    x = 214,667.95

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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.