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Finding the Fourth Proportional to 221,205.39, 331,809.27 and 54,993.39

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Solution

The fourth proportional to 221,205.39, 331,809.27 and 54,993.39 is: 82,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,205.39 : 331,809.27 = 54,993.39 : x
  2. Step 2: Convert to fraction form
    221,205.39/331,809.27 = 54,993.39/x
  3. Step 3: Cross multiply
    221,205.39x = 331,809.27 × 54,993.39
  4. Step 4: Simplify right side
    221,205.39x = 18,247,316,590.73
  5. Step 5: Solve for x
    x = 18,247,316,590.73/221,205.39
  6. Step 6: Final answer
    x = 82,490.38

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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.