Home / 311,434.56-426,976.68-305,759.43

Finding the Fourth Proportional to 311,434.56, 426,976.68 and 305,759.43

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Solution

The fourth proportional to 311,434.56, 426,976.68 and 305,759.43 is: 419,196.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,434.56 : 426,976.68 = 305,759.43 : x
  2. Step 2: Convert to fraction form
    311,434.56/426,976.68 = 305,759.43/x
  3. Step 3: Cross multiply
    311,434.56x = 426,976.68 × 305,759.43
  4. Step 4: Simplify right side
    311,434.56x = 130,552,146,300.09
  5. Step 5: Solve for x
    x = 130,552,146,300.09/311,434.56
  6. Step 6: Final answer
    x = 419,196.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.