Home / 278,231.36-417,363.94-78,566.80

Finding the Fourth Proportional to 278,231.36, 417,363.94 and 78,566.80

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Solution

The fourth proportional to 278,231.36, 417,363.94 and 78,566.80 is: 117,854.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,231.36 : 417,363.94 = 78,566.80 : x
  2. Step 2: Convert to fraction form
    278,231.36/417,363.94 = 78,566.80/x
  3. Step 3: Cross multiply
    278,231.36x = 417,363.94 × 78,566.80
  4. Step 4: Simplify right side
    278,231.36x = 32,790,949,201.19
  5. Step 5: Solve for x
    x = 32,790,949,201.19/278,231.36
  6. Step 6: Final answer
    x = 117,854.97

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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.