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Finding the Fourth Proportional to 276,213.44, 381,170.78 and 155,354.67

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Solution

The fourth proportional to 276,213.44, 381,170.78 and 155,354.67 is: 214,387.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,213.44 : 381,170.78 = 155,354.67 : x
  2. Step 2: Convert to fraction form
    276,213.44/381,170.78 = 155,354.67/x
  3. Step 3: Cross multiply
    276,213.44x = 381,170.78 × 155,354.67
  4. Step 4: Simplify right side
    276,213.44x = 59,216,659,963.77
  5. Step 5: Solve for x
    x = 59,216,659,963.77/276,213.44
  6. Step 6: Final answer
    x = 214,387.33

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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.