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Finding the Fourth Proportional to 481,486.11, 664,385.67 and 266,620.65

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Solution

The fourth proportional to 481,486.11, 664,385.67 and 266,620.65 is: 367,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,486.11 : 664,385.67 = 266,620.65 : x
  2. Step 2: Convert to fraction form
    481,486.11/664,385.67 = 266,620.65/x
  3. Step 3: Cross multiply
    481,486.11x = 664,385.67 × 266,620.65
  4. Step 4: Simplify right side
    481,486.11x = 177,138,939,186.09
  5. Step 5: Solve for x
    x = 177,138,939,186.09/481,486.11
  6. Step 6: Final answer
    x = 367,900.41

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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.