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Finding the Fourth Proportional to 445,136.80, 667,186.80 and 178,765.60

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Solution

The fourth proportional to 445,136.80, 667,186.80 and 178,765.60 is: 267,940.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,136.80 : 667,186.80 = 178,765.60 : x
  2. Step 2: Convert to fraction form
    445,136.80/667,186.80 = 178,765.60/x
  3. Step 3: Cross multiply
    445,136.80x = 667,186.80 × 178,765.60
  4. Step 4: Simplify right side
    445,136.80x = 119,270,048,614.08
  5. Step 5: Solve for x
    x = 119,270,048,614.08/445,136.80
  6. Step 6: Final answer
    x = 267,940.21

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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.