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Finding the Fourth Proportional to 270,394.39, 405,268.39 and 126,105.85

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Solution

The fourth proportional to 270,394.39, 405,268.39 and 126,105.85 is: 189,008.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,394.39 : 405,268.39 = 126,105.85 : x
  2. Step 2: Convert to fraction form
    270,394.39/405,268.39 = 126,105.85/x
  3. Step 3: Cross multiply
    270,394.39x = 405,268.39 × 126,105.85
  4. Step 4: Simplify right side
    270,394.39x = 51,106,714,799.08
  5. Step 5: Solve for x
    x = 51,106,714,799.08/270,394.39
  6. Step 6: Final answer
    x = 189,008.04

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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.