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Finding the Fourth Proportional to 220,130.80, 330,325.80 and 79,903.60

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Solution

The fourth proportional to 220,130.80, 330,325.80 and 79,903.60 is: 119,902.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,130.80 : 330,325.80 = 79,903.60 : x
  2. Step 2: Convert to fraction form
    220,130.80/330,325.80 = 79,903.60/x
  3. Step 3: Cross multiply
    220,130.80x = 330,325.80 × 79,903.60
  4. Step 4: Simplify right side
    220,130.80x = 26,394,220,592.88
  5. Step 5: Solve for x
    x = 26,394,220,592.88/220,130.80
  6. Step 6: Final answer
    x = 119,902.44

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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.