Home / 226,760.81-312,942.83-129,980.76

Finding the Fourth Proportional to 226,760.81, 312,942.83 and 129,980.76

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Solution

The fourth proportional to 226,760.81, 312,942.83 and 129,980.76 is: 179,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,760.81 : 312,942.83 = 129,980.76 : x
  2. Step 2: Convert to fraction form
    226,760.81/312,942.83 = 129,980.76/x
  3. Step 3: Cross multiply
    226,760.81x = 312,942.83 × 129,980.76
  4. Step 4: Simplify right side
    226,760.81x = 40,676,546,230.05
  5. Step 5: Solve for x
    x = 40,676,546,230.05/226,760.81
  6. Step 6: Final answer
    x = 179,380.85

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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.