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Finding the Fourth Proportional to 384,361.62, 576,042.35 and 156,391.57

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Solution

The fourth proportional to 384,361.62, 576,042.35 and 156,391.57 is: 234,383.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,361.62 : 576,042.35 = 156,391.57 : x
  2. Step 2: Convert to fraction form
    384,361.62/576,042.35 = 156,391.57/x
  3. Step 3: Cross multiply
    384,361.62x = 576,042.35 × 156,391.57
  4. Step 4: Simplify right side
    384,361.62x = 90,088,165,147.34
  5. Step 5: Solve for x
    x = 90,088,165,147.34/384,361.62
  6. Step 6: Final answer
    x = 234,383.87

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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.