Home / 221,025.20-331,319.10-108,613.40

Finding the Fourth Proportional to 221,025.20, 331,319.10 and 108,613.40

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Solution

The fourth proportional to 221,025.20, 331,319.10 and 108,613.40 is: 162,812.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,025.20 : 331,319.10 = 108,613.40 : x
  2. Step 2: Convert to fraction form
    221,025.20/331,319.10 = 108,613.40/x
  3. Step 3: Cross multiply
    221,025.20x = 331,319.10 × 108,613.40
  4. Step 4: Simplify right side
    221,025.20x = 35,985,693,935.94
  5. Step 5: Solve for x
    x = 35,985,693,935.94/221,025.20
  6. Step 6: Final answer
    x = 162,812.63

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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.