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Finding the Fourth Proportional to 220,482.80, 330,853.80 and 80,255.60

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Solution

The fourth proportional to 220,482.80, 330,853.80 and 80,255.60 is: 120,430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,482.80 : 330,853.80 = 80,255.60 : x
  2. Step 2: Convert to fraction form
    220,482.80/330,853.80 = 80,255.60/x
  3. Step 3: Cross multiply
    220,482.80x = 330,853.80 × 80,255.60
  4. Step 4: Simplify right side
    220,482.80x = 26,552,870,231.28
  5. Step 5: Solve for x
    x = 26,552,870,231.28/220,482.80
  6. Step 6: Final answer
    x = 120,430.57

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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.