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Finding the Fourth Proportional to 327,117.10, 490,675.65 and 220,828.90

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Solution

The fourth proportional to 327,117.10, 490,675.65 and 220,828.90 is: 331,243.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,117.10 : 490,675.65 = 220,828.90 : x
  2. Step 2: Convert to fraction form
    327,117.10/490,675.65 = 220,828.90/x
  3. Step 3: Cross multiply
    327,117.10x = 490,675.65 × 220,828.90
  4. Step 4: Simplify right side
    327,117.10x = 108,355,364,046.29
  5. Step 5: Solve for x
    x = 108,355,364,046.29/327,117.10
  6. Step 6: Final answer
    x = 331,243.35

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1.5x scale

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.