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Finding the Fourth Proportional to 311,081.20, 466,276.20 and 170,940.40

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Solution

The fourth proportional to 311,081.20, 466,276.20 and 170,940.40 is: 256,220.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,081.20 : 466,276.20 = 170,940.40 : x
  2. Step 2: Convert to fraction form
    311,081.20/466,276.20 = 170,940.40/x
  3. Step 3: Cross multiply
    311,081.20x = 466,276.20 × 170,940.40
  4. Step 4: Simplify right side
    311,081.20x = 79,705,440,138.48
  5. Step 5: Solve for x
    x = 79,705,440,138.48/311,081.20
  6. Step 6: Final answer
    x = 256,220.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.