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Finding the Fourth Proportional to 276,385.68, 381,382.83 and 155,524.86

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Solution

The fourth proportional to 276,385.68, 381,382.83 and 155,524.86 is: 214,607.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,385.68 : 381,382.83 = 155,524.86 : x
  2. Step 2: Convert to fraction form
    276,385.68/381,382.83 = 155,524.86/x
  3. Step 3: Cross multiply
    276,385.68x = 381,382.83 × 155,524.86
  4. Step 4: Simplify right side
    276,385.68x = 59,314,511,242.15
  5. Step 5: Solve for x
    x = 59,314,511,242.15/276,385.68
  6. Step 6: Final answer
    x = 214,607.76

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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.