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Finding the Fourth Proportional to 221,207.89, 331,813.02 and 54,995.89

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Solution

The fourth proportional to 221,207.89, 331,813.02 and 54,995.89 is: 82,494.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,207.89 : 331,813.02 = 54,995.89 : x
  2. Step 2: Convert to fraction form
    221,207.89/331,813.02 = 54,995.89/x
  3. Step 3: Cross multiply
    221,207.89x = 331,813.02 × 54,995.89
  4. Step 4: Simplify right side
    221,207.89x = 18,248,352,348.49
  5. Step 5: Solve for x
    x = 18,248,352,348.49/221,207.89
  6. Step 6: Final answer
    x = 82,494.13

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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.