Home / 278,879.04-384,867.84-158,043.84

Finding the Fourth Proportional to 278,879.04, 384,867.84 and 158,043.84

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Solution

The fourth proportional to 278,879.04, 384,867.84 and 158,043.84 is: 218,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,879.04 : 384,867.84 = 158,043.84 : x
  2. Step 2: Convert to fraction form
    278,879.04/384,867.84 = 158,043.84/x
  3. Step 3: Cross multiply
    278,879.04x = 384,867.84 × 158,043.84
  4. Step 4: Simplify right side
    278,879.04x = 60,825,991,326.11
  5. Step 5: Solve for x
    x = 60,825,991,326.11/278,879.04
  6. Step 6: Final answer
    x = 218,108.87

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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.