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Finding the Fourth Proportional to 276,182.66, 381,128.44 and 155,323.90

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Solution

The fourth proportional to 276,182.66, 381,128.44 and 155,323.90 is: 214,344.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,182.66 : 381,128.44 = 155,323.90 : x
  2. Step 2: Convert to fraction form
    276,182.66/381,128.44 = 155,323.90/x
  3. Step 3: Cross multiply
    276,182.66x = 381,128.44 × 155,323.90
  4. Step 4: Simplify right side
    276,182.66x = 59,198,355,701.72
  5. Step 5: Solve for x
    x = 59,198,355,701.72/276,182.66
  6. Step 6: Final answer
    x = 214,344.94

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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.