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Finding the Fourth Proportional to 311,061.20, 466,246.20 and 170,920.40

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Solution

The fourth proportional to 311,061.20, 466,246.20 and 170,920.40 is: 256,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,061.20 : 466,246.20 = 170,920.40 : x
  2. Step 2: Convert to fraction form
    311,061.20/466,246.20 = 170,920.40/x
  3. Step 3: Cross multiply
    311,061.20x = 466,246.20 × 170,920.40
  4. Step 4: Simplify right side
    311,061.20x = 79,690,987,002.48
  5. Step 5: Solve for x
    x = 79,690,987,002.48/311,061.20
  6. Step 6: Final answer
    x = 256,190.70

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1.5x scale

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.