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Finding the Fourth Proportional to 289,136.80, 433,737.60 and 89,455.60

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Solution

The fourth proportional to 289,136.80, 433,737.60 and 89,455.60 is: 134,193.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,136.80 : 433,737.60 = 89,455.60 : x
  2. Step 2: Convert to fraction form
    289,136.80/433,737.60 = 89,455.60/x
  3. Step 3: Cross multiply
    289,136.80x = 433,737.60 × 89,455.60
  4. Step 4: Simplify right side
    289,136.80x = 38,800,257,250.56
  5. Step 5: Solve for x
    x = 38,800,257,250.56/289,136.80
  6. Step 6: Final answer
    x = 134,193.42

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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.