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Finding the Fourth Proportional to 392,502.80, 541,622.98 and 222,736.92

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Solution

The fourth proportional to 392,502.80, 541,622.98 and 222,736.92 is: 307,359.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,502.80 : 541,622.98 = 222,736.92 : x
  2. Step 2: Convert to fraction form
    392,502.80/541,622.98 = 222,736.92/x
  3. Step 3: Cross multiply
    392,502.80x = 541,622.98 × 222,736.92
  4. Step 4: Simplify right side
    392,502.80x = 120,639,434,366.42
  5. Step 5: Solve for x
    x = 120,639,434,366.42/392,502.80
  6. Step 6: Final answer
    x = 307,359.42

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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.