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Finding the Fourth Proportional to 383,141.80, 574,712.70 and 133,791.40

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Solution

The fourth proportional to 383,141.80, 574,712.70 and 133,791.40 is: 200,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,141.80 : 574,712.70 = 133,791.40 : x
  2. Step 2: Convert to fraction form
    383,141.80/574,712.70 = 133,791.40/x
  3. Step 3: Cross multiply
    383,141.80x = 574,712.70 × 133,791.40
  4. Step 4: Simplify right side
    383,141.80x = 76,891,616,730.78
  5. Step 5: Solve for x
    x = 76,891,616,730.78/383,141.80
  6. Step 6: Final answer
    x = 200,687.10

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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.