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Finding the Fourth Proportional to 323,388.37, 443,044.20 and 311,267.44

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Solution

The fourth proportional to 323,388.37, 443,044.20 and 311,267.44 is: 426,438.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,388.37 : 443,044.20 = 311,267.44 : x
  2. Step 2: Convert to fraction form
    323,388.37/443,044.20 = 311,267.44/x
  3. Step 3: Cross multiply
    323,388.37x = 443,044.20 × 311,267.44
  4. Step 4: Simplify right side
    323,388.37x = 137,905,230,169.29
  5. Step 5: Solve for x
    x = 137,905,230,169.29/323,388.37
  6. Step 6: Final answer
    x = 426,438.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.