Home / 278,814.26-417,986.29-120,923.80

Finding the Fourth Proportional to 278,814.26, 417,986.29 and 120,923.80

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Solution

The fourth proportional to 278,814.26, 417,986.29 and 120,923.80 is: 181,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,814.26 : 417,986.29 = 120,923.80 : x
  2. Step 2: Convert to fraction form
    278,814.26/417,986.29 = 120,923.80/x
  3. Step 3: Cross multiply
    278,814.26x = 417,986.29 × 120,923.80
  4. Step 4: Simplify right side
    278,814.26x = 50,544,489,640.89
  5. Step 5: Solve for x
    x = 50,544,489,640.89/278,814.26
  6. Step 6: Final answer
    x = 181,283.73

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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.