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Finding the Fourth Proportional to 432,620.22, 648,940.82 and 133,103.28

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Solution

The fourth proportional to 432,620.22, 648,940.82 and 133,103.28 is: 199,658.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,620.22 : 648,940.82 = 133,103.28 : x
  2. Step 2: Convert to fraction form
    432,620.22/648,940.82 = 133,103.28/x
  3. Step 3: Cross multiply
    432,620.22x = 648,940.82 × 133,103.28
  4. Step 4: Simplify right side
    432,620.22x = 86,376,153,435.90
  5. Step 5: Solve for x
    x = 86,376,153,435.90/432,620.22
  6. Step 6: Final answer
    x = 199,658.15

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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.