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Finding the Fourth Proportional to 394,168.24, 543,952.20 and 215,320.24

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Solution

The fourth proportional to 394,168.24, 543,952.20 and 215,320.24 is: 297,141.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,168.24 : 543,952.20 = 215,320.24 : x
  2. Step 2: Convert to fraction form
    394,168.24/543,952.20 = 215,320.24/x
  3. Step 3: Cross multiply
    394,168.24x = 543,952.20 × 215,320.24
  4. Step 4: Simplify right side
    394,168.24x = 117,123,918,252.53
  5. Step 5: Solve for x
    x = 117,123,918,252.53/394,168.24
  6. Step 6: Final answer
    x = 297,141.95

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1.5x scale

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.