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Finding the Fourth Proportional to 276,443.88, 381,529.20 and 155,608.62

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Solution

The fourth proportional to 276,443.88, 381,529.20 and 155,608.62 is: 214,760.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,443.88 : 381,529.20 = 155,608.62 : x
  2. Step 2: Convert to fraction form
    276,443.88/381,529.20 = 155,608.62/x
  3. Step 3: Cross multiply
    276,443.88x = 381,529.20 × 155,608.62
  4. Step 4: Simplify right side
    276,443.88x = 59,369,232,301.70
  5. Step 5: Solve for x
    x = 59,369,232,301.70/276,443.88
  6. Step 6: Final answer
    x = 214,760.52

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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.