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Finding the Fourth Proportional to 375,668.85, 518,421.87 and 203,591.73

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Solution

The fourth proportional to 375,668.85, 518,421.87 and 203,591.73 is: 280,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,668.85 : 518,421.87 = 203,591.73 : x
  2. Step 2: Convert to fraction form
    375,668.85/518,421.87 = 203,591.73/x
  3. Step 3: Cross multiply
    375,668.85x = 518,421.87 × 203,591.73
  4. Step 4: Simplify right side
    375,668.85x = 105,546,405,383.14
  5. Step 5: Solve for x
    x = 105,546,405,383.14/375,668.85
  6. Step 6: Final answer
    x = 280,955.97

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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.