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Finding the Fourth Proportional to 221,132, 331,698 and 73,388

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Solution

The fourth proportional to 221,132, 331,698 and 73,388 is: 110,082

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,132 : 331,698 = 73,388 : x
  2. Step 2: Convert to fraction form
    221,132/331,698 = 73,388/x
  3. Step 3: Cross multiply
    221,132x = 331,698 × 73,388
  4. Step 4: Simplify right side
    221,132x = 24,342,652,824
  5. Step 5: Solve for x
    x = 24,342,652,824/221,132
  6. Step 6: Final answer
    x = 110,082

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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.