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Finding the Fourth Proportional to 221,256,642.20, 331,247,234.10 and 221,256,642.20

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Solution

The fourth proportional to 221,256,642.20, 331,247,234.10 and 221,256,642.20 is: 331,247,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,256,642.20 : 331,247,234.10 = 221,256,642.20 : x
  2. Step 2: Convert to fraction form
    221,256,642.20/331,247,234.10 = 221,256,642.20/x
  3. Step 3: Cross multiply
    221,256,642.20x = 331,247,234.10 × 221,256,642.20
  4. Step 4: Simplify right side
    221,256,642.20x = 73,290,650,755,003,344
  5. Step 5: Solve for x
    x = 73,290,650,755,003,344/221,256,642.20
  6. Step 6: Final answer
    x = 331,247,234.10

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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.