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Finding the Fourth Proportional to 327,274.10, 490,623.15 and 221,750.90

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Solution

The fourth proportional to 327,274.10, 490,623.15 and 221,750.90 is: 332,431.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,274.10 : 490,623.15 = 221,750.90 : x
  2. Step 2: Convert to fraction form
    327,274.10/490,623.15 = 221,750.90/x
  3. Step 3: Cross multiply
    327,274.10x = 490,623.15 × 221,750.90
  4. Step 4: Simplify right side
    327,274.10x = 108,796,125,073.34
  5. Step 5: Solve for x
    x = 108,796,125,073.34/327,274.10
  6. Step 6: Final answer
    x = 332,431.21

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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.