Home / 278,815.39-417,987.98-120,924.92

Finding the Fourth Proportional to 278,815.39, 417,987.98 and 120,924.92

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Solution

The fourth proportional to 278,815.39, 417,987.98 and 120,924.92 is: 181,285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,815.39 : 417,987.98 = 120,924.92 : x
  2. Step 2: Convert to fraction form
    278,815.39/417,987.98 = 120,924.92/x
  3. Step 3: Cross multiply
    278,815.39x = 417,987.98 × 120,924.92
  4. Step 4: Simplify right side
    278,815.39x = 50,545,163,936.28
  5. Step 5: Solve for x
    x = 50,545,163,936.28/278,815.39
  6. Step 6: Final answer
    x = 181,285.42

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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.