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Finding the Fourth Proportional to 221,168.18, 331,752.50 and 54,956.18

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Solution

The fourth proportional to 221,168.18, 331,752.50 and 54,956.18 is: 82,434.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,168.18 : 331,752.50 = 54,956.18 : x
  2. Step 2: Convert to fraction form
    221,168.18/331,752.50 = 54,956.18/x
  3. Step 3: Cross multiply
    221,168.18x = 331,752.50 × 54,956.18
  4. Step 4: Simplify right side
    221,168.18x = 18,231,850,105.45
  5. Step 5: Solve for x
    x = 18,231,850,105.45/221,168.18
  6. Step 6: Final answer
    x = 82,434.33

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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.