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Finding the Fourth Proportional to 383,732.91, 575,719.25 and 131,019.39

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Solution

The fourth proportional to 383,732.91, 575,719.25 and 131,019.39 is: 196,570.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,732.91 : 575,719.25 = 131,019.39 : x
  2. Step 2: Convert to fraction form
    383,732.91/575,719.25 = 131,019.39/x
  3. Step 3: Cross multiply
    383,732.91x = 575,719.25 × 131,019.39
  4. Step 4: Simplify right side
    383,732.91x = 75,430,384,291.16
  5. Step 5: Solve for x
    x = 75,430,384,291.16/383,732.91
  6. Step 6: Final answer
    x = 196,570.02

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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.