Home / 226,440.46-312,481.09-129,641.11

Finding the Fourth Proportional to 226,440.46, 312,481.09 and 129,641.11

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Solution

The fourth proportional to 226,440.46, 312,481.09 and 129,641.11 is: 178,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,440.46 : 312,481.09 = 129,641.11 : x
  2. Step 2: Convert to fraction form
    226,440.46/312,481.09 = 129,641.11/x
  3. Step 3: Cross multiply
    226,440.46x = 312,481.09 × 129,641.11
  4. Step 4: Simplify right side
    226,440.46x = 40,510,394,742.46
  5. Step 5: Solve for x
    x = 40,510,394,742.46/226,440.46
  6. Step 6: Final answer
    x = 178,900.87

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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.