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Finding the Fourth Proportional to 308,668.73, 462,991.97 and 80,962.53

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Solution

The fourth proportional to 308,668.73, 462,991.97 and 80,962.53 is: 121,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,668.73 : 462,991.97 = 80,962.53 : x
  2. Step 2: Convert to fraction form
    308,668.73/462,991.97 = 80,962.53/x
  3. Step 3: Cross multiply
    308,668.73x = 462,991.97 × 80,962.53
  4. Step 4: Simplify right side
    308,668.73x = 37,484,999,491.81
  5. Step 5: Solve for x
    x = 37,484,999,491.81/308,668.73
  6. Step 6: Final answer
    x = 121,440.87

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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.