Home / 278,819.04-417,993.40-120,928.58

Finding the Fourth Proportional to 278,819.04, 417,993.40 and 120,928.58

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Solution

The fourth proportional to 278,819.04, 417,993.40 and 120,928.58 is: 181,290.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,819.04 : 417,993.40 = 120,928.58 : x
  2. Step 2: Convert to fraction form
    278,819.04/417,993.40 = 120,928.58/x
  3. Step 3: Cross multiply
    278,819.04x = 417,993.40 × 120,928.58
  4. Step 4: Simplify right side
    278,819.04x = 50,547,348,311.37
  5. Step 5: Solve for x
    x = 50,547,348,311.37/278,819.04
  6. Step 6: Final answer
    x = 181,290.88

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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.