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Finding the Fourth Proportional to 443,228.49, 664,745.54 and 127,616.85

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Solution

The fourth proportional to 443,228.49, 664,745.54 and 127,616.85 is: 191,397.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,228.49 : 664,745.54 = 127,616.85 : x
  2. Step 2: Convert to fraction form
    443,228.49/664,745.54 = 127,616.85/x
  3. Step 3: Cross multiply
    443,228.49x = 664,745.54 × 127,616.85
  4. Step 4: Simplify right side
    443,228.49x = 84,832,731,228.26
  5. Step 5: Solve for x
    x = 84,832,731,228.26/443,228.49
  6. Step 6: Final answer
    x = 191,397.29

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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.