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Finding the Fourth Proportional to 276,379.28, 414,607.80 and 136,139.12

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Solution

The fourth proportional to 276,379.28, 414,607.80 and 136,139.12 is: 204,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,379.28 : 414,607.80 = 136,139.12 : x
  2. Step 2: Convert to fraction form
    276,379.28/414,607.80 = 136,139.12/x
  3. Step 3: Cross multiply
    276,379.28x = 414,607.80 × 136,139.12
  4. Step 4: Simplify right side
    276,379.28x = 56,444,341,037.14
  5. Step 5: Solve for x
    x = 56,444,341,037.14/276,379.28
  6. Step 6: Final answer
    x = 204,227.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.