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Finding the Fourth Proportional to 392,706.72, 541,979.26 and 237,743.42

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Solution

The fourth proportional to 392,706.72, 541,979.26 and 237,743.42 is: 328,112.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,706.72 : 541,979.26 = 237,743.42 : x
  2. Step 2: Convert to fraction form
    392,706.72/541,979.26 = 237,743.42/x
  3. Step 3: Cross multiply
    392,706.72x = 541,979.26 × 237,743.42
  4. Step 4: Simplify right side
    392,706.72x = 128,852,004,766.86
  5. Step 5: Solve for x
    x = 128,852,004,766.86/392,706.72
  6. Step 6: Final answer
    x = 328,112.56

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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.