Home / 311,371.83-428,788.08-270,517.05

Finding the Fourth Proportional to 311,371.83, 428,788.08 and 270,517.05

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Solution

The fourth proportional to 311,371.83, 428,788.08 and 270,517.05 is: 372,527.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,371.83 : 428,788.08 = 270,517.05 : x
  2. Step 2: Convert to fraction form
    311,371.83/428,788.08 = 270,517.05/x
  3. Step 3: Cross multiply
    311,371.83x = 428,788.08 × 270,517.05
  4. Step 4: Simplify right side
    311,371.83x = 115,994,486,476.76
  5. Step 5: Solve for x
    x = 115,994,486,476.76/311,371.83
  6. Step 6: Final answer
    x = 372,527.23

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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.