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Finding the Fourth Proportional to 225,407.28, 338,091.36 and 136,634.64

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Solution

The fourth proportional to 225,407.28, 338,091.36 and 136,634.64 is: 204,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,407.28 : 338,091.36 = 136,634.64 : x
  2. Step 2: Convert to fraction form
    225,407.28/338,091.36 = 136,634.64/x
  3. Step 3: Cross multiply
    225,407.28x = 338,091.36 × 136,634.64
  4. Step 4: Simplify right side
    225,407.28x = 46,194,991,260.71
  5. Step 5: Solve for x
    x = 46,194,991,260.71/225,407.28
  6. Step 6: Final answer
    x = 204,940.10

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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.