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Finding the Fourth Proportional to 481,499.87, 664,469.21 and 266,639.67

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Solution

The fourth proportional to 481,499.87, 664,469.21 and 266,639.67 is: 367,962.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,499.87 : 664,469.21 = 266,639.67 : x
  2. Step 2: Convert to fraction form
    481,499.87/664,469.21 = 266,639.67/x
  3. Step 3: Cross multiply
    481,499.87x = 664,469.21 × 266,639.67
  4. Step 4: Simplify right side
    481,499.87x = 177,173,851,546.16
  5. Step 5: Solve for x
    x = 177,173,851,546.16/481,499.87
  6. Step 6: Final answer
    x = 367,962.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.