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Finding the Fourth Proportional to 384,361.55, 576,042.24 and 156,391.49

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Solution

The fourth proportional to 384,361.55, 576,042.24 and 156,391.49 is: 234,383.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,361.55 : 576,042.24 = 156,391.49 : x
  2. Step 2: Convert to fraction form
    384,361.55/576,042.24 = 156,391.49/x
  3. Step 3: Cross multiply
    384,361.55x = 576,042.24 × 156,391.49
  4. Step 4: Simplify right side
    384,361.55x = 90,088,103,434.58
  5. Step 5: Solve for x
    x = 90,088,103,434.58/384,361.55
  6. Step 6: Final answer
    x = 234,383.76

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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.