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Finding the Fourth Proportional to 221,209.39, 331,815.30 and 54,997.39

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Solution

The fourth proportional to 221,209.39, 331,815.30 and 54,997.39 is: 82,496.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,209.39 : 331,815.30 = 54,997.39 : x
  2. Step 2: Convert to fraction form
    221,209.39/331,815.30 = 54,997.39/x
  3. Step 3: Cross multiply
    221,209.39x = 331,815.30 × 54,997.39
  4. Step 4: Simplify right side
    221,209.39x = 18,248,975,462.07
  5. Step 5: Solve for x
    x = 18,248,975,462.07/221,209.39
  6. Step 6: Final answer
    x = 82,496.39

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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.