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Finding the Fourth Proportional to 280,162.92, 420,120.48 and 80,436.96

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Solution

The fourth proportional to 280,162.92, 420,120.48 and 80,436.96 is: 120,619.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,162.92 : 420,120.48 = 80,436.96 : x
  2. Step 2: Convert to fraction form
    280,162.92/420,120.48 = 80,436.96/x
  3. Step 3: Cross multiply
    280,162.92x = 420,120.48 × 80,436.96
  4. Step 4: Simplify right side
    280,162.92x = 33,793,214,244.94
  5. Step 5: Solve for x
    x = 33,793,214,244.94/280,162.92
  6. Step 6: Final answer
    x = 120,619.87

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1.5x scale

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.