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Finding the Fourth Proportional to 311,136.50, 466,704.75 and 89,520.50

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Solution

The fourth proportional to 311,136.50, 466,704.75 and 89,520.50 is: 134,280.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,136.50 : 466,704.75 = 89,520.50 : x
  2. Step 2: Convert to fraction form
    311,136.50/466,704.75 = 89,520.50/x
  3. Step 3: Cross multiply
    311,136.50x = 466,704.75 × 89,520.50
  4. Step 4: Simplify right side
    311,136.50x = 41,779,642,572.38
  5. Step 5: Solve for x
    x = 41,779,642,572.38/311,136.50
  6. Step 6: Final answer
    x = 134,280.75

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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.