Home / 280,433.52-419,979.68-161,745.04

Finding the Fourth Proportional to 280,433.52, 419,979.68 and 161,745.04

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Solution

The fourth proportional to 280,433.52, 419,979.68 and 161,745.04 is: 242,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,433.52 : 419,979.68 = 161,745.04 : x
  2. Step 2: Convert to fraction form
    280,433.52/419,979.68 = 161,745.04/x
  3. Step 3: Cross multiply
    280,433.52x = 419,979.68 × 161,745.04
  4. Step 4: Simplify right side
    280,433.52x = 67,929,630,140.79
  5. Step 5: Solve for x
    x = 67,929,630,140.79/280,433.52
  6. Step 6: Final answer
    x = 242,230.78

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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.