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Finding the Fourth Proportional to 323,445.80, 484,002.30 and 218,469.80

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Solution

The fourth proportional to 323,445.80, 484,002.30 and 218,469.80 is: 326,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,445.80 : 484,002.30 = 218,469.80 : x
  2. Step 2: Convert to fraction form
    323,445.80/484,002.30 = 218,469.80/x
  3. Step 3: Cross multiply
    323,445.80x = 484,002.30 × 218,469.80
  4. Step 4: Simplify right side
    323,445.80x = 105,739,885,680.54
  5. Step 5: Solve for x
    x = 105,739,885,680.54/323,445.80
  6. Step 6: Final answer
    x = 326,916.86

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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.