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Finding the Fourth Proportional to 439,658.82, 606,742.38 and 248,668.38

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Solution

The fourth proportional to 439,658.82, 606,742.38 and 248,668.38 is: 343,169.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,658.82 : 606,742.38 = 248,668.38 : x
  2. Step 2: Convert to fraction form
    439,658.82/606,742.38 = 248,668.38/x
  3. Step 3: Cross multiply
    439,658.82x = 606,742.38 × 248,668.38
  4. Step 4: Simplify right side
    439,658.82x = 150,877,644,711.94
  5. Step 5: Solve for x
    x = 150,877,644,711.94/439,658.82
  6. Step 6: Final answer
    x = 343,169.83

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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.