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Finding the Fourth Proportional to 481,398.63, 664,350.86 and 266,538.69

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Solution

The fourth proportional to 481,398.63, 664,350.86 and 266,538.69 is: 367,834.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,398.63 : 664,350.86 = 266,538.69 : x
  2. Step 2: Convert to fraction form
    481,398.63/664,350.86 = 266,538.69/x
  3. Step 3: Cross multiply
    481,398.63x = 664,350.86 × 266,538.69
  4. Step 4: Simplify right side
    481,398.63x = 177,075,206,532.42
  5. Step 5: Solve for x
    x = 177,075,206,532.42/481,398.63
  6. Step 6: Final answer
    x = 367,834.88

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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.