Home / 278,813.28-417,984.84-120,922.86

Finding the Fourth Proportional to 278,813.28, 417,984.84 and 120,922.86

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Solution

The fourth proportional to 278,813.28, 417,984.84 and 120,922.86 is: 181,282.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,813.28 : 417,984.84 = 120,922.86 : x
  2. Step 2: Convert to fraction form
    278,813.28/417,984.84 = 120,922.86/x
  3. Step 3: Cross multiply
    278,813.28x = 417,984.84 × 120,922.86
  4. Step 4: Simplify right side
    278,813.28x = 50,543,922,289.44
  5. Step 5: Solve for x
    x = 50,543,922,289.44/278,813.28
  6. Step 6: Final answer
    x = 181,282.33

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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.