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Finding the Fourth Proportional to 221,715.70, 332,136.15 and 132,704.80

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Solution

The fourth proportional to 221,715.70, 332,136.15 and 132,704.80 is: 198,795.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,715.70 : 332,136.15 = 132,704.80 : x
  2. Step 2: Convert to fraction form
    221,715.70/332,136.15 = 132,704.80/x
  3. Step 3: Cross multiply
    221,715.70x = 332,136.15 × 132,704.80
  4. Step 4: Simplify right side
    221,715.70x = 44,076,061,358.52
  5. Step 5: Solve for x
    x = 44,076,061,358.52/221,715.70
  6. Step 6: Final answer
    x = 198,795.40

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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.