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Finding the Fourth Proportional to 321,727.71, 443,984.79 and 178,487.79

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Solution

The fourth proportional to 321,727.71, 443,984.79 and 178,487.79 is: 246,313.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,727.71 : 443,984.79 = 178,487.79 : x
  2. Step 2: Convert to fraction form
    321,727.71/443,984.79 = 178,487.79/x
  3. Step 3: Cross multiply
    321,727.71x = 443,984.79 × 178,487.79
  4. Step 4: Simplify right side
    321,727.71x = 79,245,863,960.71
  5. Step 5: Solve for x
    x = 79,245,863,960.71/321,727.71
  6. Step 6: Final answer
    x = 246,313.46

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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.