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Finding the Fourth Proportional to 321,641.91, 443,827.76 and 178,366.95

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Solution

The fourth proportional to 321,641.91, 443,827.76 and 178,366.95 is: 246,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,641.91 : 443,827.76 = 178,366.95 : x
  2. Step 2: Convert to fraction form
    321,641.91/443,827.76 = 178,366.95/x
  3. Step 3: Cross multiply
    321,641.91x = 443,827.76 × 178,366.95
  4. Step 4: Simplify right side
    321,641.91x = 79,164,202,984.70
  5. Step 5: Solve for x
    x = 79,164,202,984.70/321,641.91
  6. Step 6: Final answer
    x = 246,125.27

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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.