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Finding the Fourth Proportional to 387,668.88, 581,749.68 and 200,680.56

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Solution

The fourth proportional to 387,668.88, 581,749.68 and 200,680.56 is: 301,148.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,668.88 : 581,749.68 = 200,680.56 : x
  2. Step 2: Convert to fraction form
    387,668.88/581,749.68 = 200,680.56/x
  3. Step 3: Cross multiply
    387,668.88x = 581,749.68 × 200,680.56
  4. Step 4: Simplify right side
    387,668.88x = 116,745,851,562.22
  5. Step 5: Solve for x
    x = 116,745,851,562.22/387,668.88
  6. Step 6: Final answer
    x = 301,148.37

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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.