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Finding the Fourth Proportional to 367,668.57, 551,378.84 and 139,910.12

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Solution

The fourth proportional to 367,668.57, 551,378.84 and 139,910.12 is: 209,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,668.57 : 551,378.84 = 139,910.12 : x
  2. Step 2: Convert to fraction form
    367,668.57/551,378.84 = 139,910.12/x
  3. Step 3: Cross multiply
    367,668.57x = 551,378.84 × 139,910.12
  4. Step 4: Simplify right side
    367,668.57x = 77,143,476,213.42
  5. Step 5: Solve for x
    x = 77,143,476,213.42/367,668.57
  6. Step 6: Final answer
    x = 209,817.98

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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.