Home / 353,879.38-531,047.42-129,221.00

Finding the Fourth Proportional to 353,879.38, 531,047.42 and 129,221.00

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Solution

The fourth proportional to 353,879.38, 531,047.42 and 129,221.00 is: 193,914.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,879.38 : 531,047.42 = 129,221.00 : x
  2. Step 2: Convert to fraction form
    353,879.38/531,047.42 = 129,221.00/x
  3. Step 3: Cross multiply
    353,879.38x = 531,047.42 × 129,221.00
  4. Step 4: Simplify right side
    353,879.38x = 68,622,476,327.64
  5. Step 5: Solve for x
    x = 68,622,476,327.64/353,879.38
  6. Step 6: Final answer
    x = 193,914.88

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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.