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Finding the Fourth Proportional to 311,010.40, 466,515.60 and 133,487.20

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Solution

The fourth proportional to 311,010.40, 466,515.60 and 133,487.20 is: 200,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,010.40 : 466,515.60 = 133,487.20 : x
  2. Step 2: Convert to fraction form
    311,010.40/466,515.60 = 133,487.20/x
  3. Step 3: Cross multiply
    311,010.40x = 466,515.60 × 133,487.20
  4. Step 4: Simplify right side
    311,010.40x = 62,273,861,200.32
  5. Step 5: Solve for x
    x = 62,273,861,200.32/311,010.40
  6. Step 6: Final answer
    x = 200,230.80

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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.