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Finding the Fourth Proportional to 311,074.80, 466,612.20 and 305,890.80

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Solution

The fourth proportional to 311,074.80, 466,612.20 and 305,890.80 is: 458,836.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,074.80 : 466,612.20 = 305,890.80 : x
  2. Step 2: Convert to fraction form
    311,074.80/466,612.20 = 305,890.80/x
  3. Step 3: Cross multiply
    311,074.80x = 466,612.20 × 305,890.80
  4. Step 4: Simplify right side
    311,074.80x = 142,732,379,147.76
  5. Step 5: Solve for x
    x = 142,732,379,147.76/311,074.80
  6. Step 6: Final answer
    x = 458,836.20

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Similar ratio
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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.