Home / 225,535.62-311,231.01-128,744.46

Finding the Fourth Proportional to 225,535.62, 311,231.01 and 128,744.46

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Solution

The fourth proportional to 225,535.62, 311,231.01 and 128,744.46 is: 177,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,535.62 : 311,231.01 = 128,744.46 : x
  2. Step 2: Convert to fraction form
    225,535.62/311,231.01 = 128,744.46/x
  3. Step 3: Cross multiply
    225,535.62x = 311,231.01 × 128,744.46
  4. Step 4: Simplify right side
    225,535.62x = 40,069,268,317.70
  5. Step 5: Solve for x
    x = 40,069,268,317.70/225,535.62
  6. Step 6: Final answer
    x = 177,662.70

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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.