Home / 278,724.20-384,757.17-188,202.74

Finding the Fourth Proportional to 278,724.20, 384,757.17 and 188,202.74

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Solution

The fourth proportional to 278,724.20, 384,757.17 and 188,202.74 is: 259,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,724.20 : 384,757.17 = 188,202.74 : x
  2. Step 2: Convert to fraction form
    278,724.20/384,757.17 = 188,202.74/x
  3. Step 3: Cross multiply
    278,724.20x = 384,757.17 × 188,202.74
  4. Step 4: Simplify right side
    278,724.20x = 72,412,353,628.65
  5. Step 5: Solve for x
    x = 72,412,353,628.65/278,724.20
  6. Step 6: Final answer
    x = 259,799.31

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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.