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Finding the Fourth Proportional to 392,996.82, 589,610.04 and 126,751.44

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Solution

The fourth proportional to 392,996.82, 589,610.04 and 126,751.44 is: 190,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,996.82 : 589,610.04 = 126,751.44 : x
  2. Step 2: Convert to fraction form
    392,996.82/589,610.04 = 126,751.44/x
  3. Step 3: Cross multiply
    392,996.82x = 589,610.04 × 126,751.44
  4. Step 4: Simplify right side
    392,996.82x = 74,733,921,608.46
  5. Step 5: Solve for x
    x = 74,733,921,608.46/392,996.82
  6. Step 6: Final answer
    x = 190,164.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.