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Finding the Fourth Proportional to 548,643.43, 757,092.38 and 306,884.55

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Solution

The fourth proportional to 548,643.43, 757,092.38 and 306,884.55 is: 423,480.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,643.43 : 757,092.38 = 306,884.55 : x
  2. Step 2: Convert to fraction form
    548,643.43/757,092.38 = 306,884.55/x
  3. Step 3: Cross multiply
    548,643.43x = 757,092.38 × 306,884.55
  4. Step 4: Simplify right side
    548,643.43x = 232,339,954,344.73
  5. Step 5: Solve for x
    x = 232,339,954,344.73/548,643.43
  6. Step 6: Final answer
    x = 423,480.79

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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.