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Finding the Fourth Proportional to 392,474.72, 541,600.08 and 222,698.72

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Solution

The fourth proportional to 392,474.72, 541,600.08 and 222,698.72 is: 307,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,474.72 : 541,600.08 = 222,698.72 : x
  2. Step 2: Convert to fraction form
    392,474.72/541,600.08 = 222,698.72/x
  3. Step 3: Cross multiply
    392,474.72x = 541,600.08 × 222,698.72
  4. Step 4: Simplify right side
    392,474.72x = 120,613,644,567.90
  5. Step 5: Solve for x
    x = 120,613,644,567.90/392,474.72
  6. Step 6: Final answer
    x = 307,315.70

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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.