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Finding the Fourth Proportional to 393,725.80, 590,199.90 and 193,882.60

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Solution

The fourth proportional to 393,725.80, 590,199.90 and 193,882.60 is: 290,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,725.80 : 590,199.90 = 193,882.60 : x
  2. Step 2: Convert to fraction form
    393,725.80/590,199.90 = 193,882.60/x
  3. Step 3: Cross multiply
    393,725.80x = 590,199.90 × 193,882.60
  4. Step 4: Simplify right side
    393,725.80x = 114,429,491,131.74
  5. Step 5: Solve for x
    x = 114,429,491,131.74/393,725.80
  6. Step 6: Final answer
    x = 290,632.44

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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.