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Finding the Fourth Proportional to 392,676.65, 541,879.35 and 239,970.39

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Solution

The fourth proportional to 392,676.65, 541,879.35 and 239,970.39 is: 331,150.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,676.65 : 541,879.35 = 239,970.39 : x
  2. Step 2: Convert to fraction form
    392,676.65/541,879.35 = 239,970.39/x
  3. Step 3: Cross multiply
    392,676.65x = 541,879.35 × 239,970.39
  4. Step 4: Simplify right side
    392,676.65x = 130,034,998,952.45
  5. Step 5: Solve for x
    x = 130,034,998,952.45/392,676.65
  6. Step 6: Final answer
    x = 331,150.32

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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.