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Finding the Fourth Proportional to 311,080.20, 466,274.70 and 170,939.40

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Solution

The fourth proportional to 311,080.20, 466,274.70 and 170,939.40 is: 256,219.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,080.20 : 466,274.70 = 170,939.40 : x
  2. Step 2: Convert to fraction form
    311,080.20/466,274.70 = 170,939.40/x
  3. Step 3: Cross multiply
    311,080.20x = 466,274.70 × 170,939.40
  4. Step 4: Simplify right side
    311,080.20x = 79,704,717,453.18
  5. Step 5: Solve for x
    x = 79,704,717,453.18/311,080.20
  6. Step 6: Final answer
    x = 256,219.19

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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.