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Finding the Fourth Proportional to 383,436.87, 575,134.20 and 117,197.25

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Solution

The fourth proportional to 383,436.87, 575,134.20 and 117,197.25 is: 175,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,436.87 : 575,134.20 = 117,197.25 : x
  2. Step 2: Convert to fraction form
    383,436.87/575,134.20 = 117,197.25/x
  3. Step 3: Cross multiply
    383,436.87x = 575,134.20 × 117,197.25
  4. Step 4: Simplify right side
    383,436.87x = 67,404,146,620.95
  5. Step 5: Solve for x
    x = 67,404,146,620.95/383,436.87
  6. Step 6: Final answer
    x = 175,789.42

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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.