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Finding the Fourth Proportional to 392,439.70, 541,567.92 and 222,673.42

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Solution

The fourth proportional to 392,439.70, 541,567.92 and 222,673.42 is: 307,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,439.70 : 541,567.92 = 222,673.42 : x
  2. Step 2: Convert to fraction form
    392,439.70/541,567.92 = 222,673.42/x
  3. Step 3: Cross multiply
    392,439.70x = 541,567.92 × 222,673.42
  4. Step 4: Simplify right side
    392,439.70x = 120,592,780,908.69
  5. Step 5: Solve for x
    x = 120,592,780,908.69/392,439.70
  6. Step 6: Final answer
    x = 307,289.96

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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.