Home / 278,815.04-417,987.41-120,924.57

Finding the Fourth Proportional to 278,815.04, 417,987.41 and 120,924.57

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Solution

The fourth proportional to 278,815.04, 417,987.41 and 120,924.57 is: 181,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,815.04 : 417,987.41 = 120,924.57 : x
  2. Step 2: Convert to fraction form
    278,815.04/417,987.41 = 120,924.57/x
  3. Step 3: Cross multiply
    278,815.04x = 417,987.41 × 120,924.57
  4. Step 4: Simplify right side
    278,815.04x = 50,544,947,215.04
  5. Step 5: Solve for x
    x = 50,544,947,215.04/278,815.04
  6. Step 6: Final answer
    x = 181,284.87

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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.