Home / 311,436.27-429,334.16-221,856.75

Finding the Fourth Proportional to 311,436.27, 429,334.16 and 221,856.75

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Solution

The fourth proportional to 311,436.27, 429,334.16 and 221,856.75 is: 305,843.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,436.27 : 429,334.16 = 221,856.75 : x
  2. Step 2: Convert to fraction form
    311,436.27/429,334.16 = 221,856.75/x
  3. Step 3: Cross multiply
    311,436.27x = 429,334.16 × 221,856.75
  4. Step 4: Simplify right side
    311,436.27x = 95,250,680,292.30
  5. Step 5: Solve for x
    x = 95,250,680,292.30/311,436.27
  6. Step 6: Final answer
    x = 305,843.25

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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.