Home / 280,245.91-420,439.27-80,566.66

Finding the Fourth Proportional to 280,245.91, 420,439.27 and 80,566.66

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Solution

The fourth proportional to 280,245.91, 420,439.27 and 80,566.66 is: 120,870.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,245.91 : 420,439.27 = 80,566.66 : x
  2. Step 2: Convert to fraction form
    280,245.91/420,439.27 = 80,566.66/x
  3. Step 3: Cross multiply
    280,245.91x = 420,439.27 × 80,566.66
  4. Step 4: Simplify right side
    280,245.91x = 33,873,387,716.74
  5. Step 5: Solve for x
    x = 33,873,387,716.74/280,245.91
  6. Step 6: Final answer
    x = 120,870.23

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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.