Home / 384,906.32-531,172.68-215,136.80

Finding the Fourth Proportional to 384,906.32, 531,172.68 and 215,136.80

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Solution

The fourth proportional to 384,906.32, 531,172.68 and 215,136.80 is: 296,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,906.32 : 531,172.68 = 215,136.80 : x
  2. Step 2: Convert to fraction form
    384,906.32/531,172.68 = 215,136.80/x
  3. Step 3: Cross multiply
    384,906.32x = 531,172.68 × 215,136.80
  4. Step 4: Simplify right side
    384,906.32x = 114,274,790,622.62
  5. Step 5: Solve for x
    x = 114,274,790,622.62/384,906.32
  6. Step 6: Final answer
    x = 296,889.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.