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Finding the Fourth Proportional to 225,351.71, 311,196.09 and 144,918.91

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Solution

The fourth proportional to 225,351.71, 311,196.09 and 144,918.91 is: 200,123.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,351.71 : 311,196.09 = 144,918.91 : x
  2. Step 2: Convert to fraction form
    225,351.71/311,196.09 = 144,918.91/x
  3. Step 3: Cross multiply
    225,351.71x = 311,196.09 × 144,918.91
  4. Step 4: Simplify right side
    225,351.71x = 45,098,198,159.06
  5. Step 5: Solve for x
    x = 45,098,198,159.06/225,351.71
  6. Step 6: Final answer
    x = 200,123.61

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1.5x scale

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.