Home / 225,821.70-311,611.50-130,359.15

Finding the Fourth Proportional to 225,821.70, 311,611.50 and 130,359.15

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Solution

The fourth proportional to 225,821.70, 311,611.50 and 130,359.15 is: 179,882.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,821.70 : 311,611.50 = 130,359.15 : x
  2. Step 2: Convert to fraction form
    225,821.70/311,611.50 = 130,359.15/x
  3. Step 3: Cross multiply
    225,821.70x = 311,611.50 × 130,359.15
  4. Step 4: Simplify right side
    225,821.70x = 40,621,410,270.23
  5. Step 5: Solve for x
    x = 40,621,410,270.23/225,821.70
  6. Step 6: Final answer
    x = 179,882.67

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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.