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Finding the Fourth Proportional to 221,292.78, 331,938.91 and 88,266.46

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Solution

The fourth proportional to 221,292.78, 331,938.91 and 88,266.46 is: 132,399.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,292.78 : 331,938.91 = 88,266.46 : x
  2. Step 2: Convert to fraction form
    221,292.78/331,938.91 = 88,266.46/x
  3. Step 3: Cross multiply
    221,292.78x = 331,938.91 × 88,266.46
  4. Step 4: Simplify right side
    221,292.78x = 29,299,072,521.96
  5. Step 5: Solve for x
    x = 29,299,072,521.96/221,292.78
  6. Step 6: Final answer
    x = 132,399.59

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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.