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Finding the Fourth Proportional to 220,438.80, 330,744.60 and 80,211.60

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Solution

The fourth proportional to 220,438.80, 330,744.60 and 80,211.60 is: 120,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,438.80 : 330,744.60 = 80,211.60 : x
  2. Step 2: Convert to fraction form
    220,438.80/330,744.60 = 80,211.60/x
  3. Step 3: Cross multiply
    220,438.80x = 330,744.60 × 80,211.60
  4. Step 4: Simplify right side
    220,438.80x = 26,529,553,557.36
  5. Step 5: Solve for x
    x = 26,529,553,557.36/220,438.80
  6. Step 6: Final answer
    x = 120,348.84

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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.