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Finding the Fourth Proportional to 481,291.23, 664,218.78 and 274,564.17

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Solution

The fourth proportional to 481,291.23, 664,218.78 and 274,564.17 is: 378,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,291.23 : 664,218.78 = 274,564.17 : x
  2. Step 2: Convert to fraction form
    481,291.23/664,218.78 = 274,564.17/x
  3. Step 3: Cross multiply
    481,291.23x = 664,218.78 × 274,564.17
  4. Step 4: Simplify right side
    481,291.23x = 182,370,674,639.49
  5. Step 5: Solve for x
    x = 182,370,674,639.49/481,291.23
  6. Step 6: Final answer
    x = 378,919.59

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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.