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Finding the Fourth Proportional to 383,791.12, 575,682.63 and 131,068.72

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Solution

The fourth proportional to 383,791.12, 575,682.63 and 131,068.72 is: 196,601.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,791.12 : 575,682.63 = 131,068.72 : x
  2. Step 2: Convert to fraction form
    383,791.12/575,682.63 = 131,068.72/x
  3. Step 3: Cross multiply
    383,791.12x = 575,682.63 × 131,068.72
  4. Step 4: Simplify right side
    383,791.12x = 75,453,985,440.33
  5. Step 5: Solve for x
    x = 75,453,985,440.33/383,791.12
  6. Step 6: Final answer
    x = 196,601.70

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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.