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Finding the Fourth Proportional to 383,955.09, 575,930.21 and 131,113.59

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Solution

The fourth proportional to 383,955.09, 575,930.21 and 131,113.59 is: 196,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,955.09 : 575,930.21 = 131,113.59 : x
  2. Step 2: Convert to fraction form
    383,955.09/575,930.21 = 131,113.59/x
  3. Step 3: Cross multiply
    383,955.09x = 575,930.21 × 131,113.59
  4. Step 4: Simplify right side
    383,955.09x = 75,512,276,766.99
  5. Step 5: Solve for x
    x = 75,512,276,766.99/383,955.09
  6. Step 6: Final answer
    x = 196,669.56

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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.