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Finding the Fourth Proportional to 393,467.81, 590,388.44 and 203,892.75

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Solution

The fourth proportional to 393,467.81, 590,388.44 and 203,892.75 is: 305,935.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,467.81 : 590,388.44 = 203,892.75 : x
  2. Step 2: Convert to fraction form
    393,467.81/590,388.44 = 203,892.75/x
  3. Step 3: Cross multiply
    393,467.81x = 590,388.44 × 203,892.75
  4. Step 4: Simplify right side
    393,467.81x = 120,375,921,580.35
  5. Step 5: Solve for x
    x = 120,375,921,580.35/393,467.81
  6. Step 6: Final answer
    x = 305,935.89

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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.