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Finding the Fourth Proportional to 220,136.40, 330,550.20 and 126,824.40

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Solution

The fourth proportional to 220,136.40, 330,550.20 and 126,824.40 is: 190,435.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,136.40 : 330,550.20 = 126,824.40 : x
  2. Step 2: Convert to fraction form
    220,136.40/330,550.20 = 126,824.40/x
  3. Step 3: Cross multiply
    220,136.40x = 330,550.20 × 126,824.40
  4. Step 4: Simplify right side
    220,136.40x = 41,921,830,784.88
  5. Step 5: Solve for x
    x = 41,921,830,784.88/220,136.40
  6. Step 6: Final answer
    x = 190,435.71

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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.