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Finding the Fourth Proportional to 383,755.20, 575,580.96 and 103,289.28

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Solution

The fourth proportional to 383,755.20, 575,580.96 and 103,289.28 is: 154,919.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,755.20 : 575,580.96 = 103,289.28 : x
  2. Step 2: Convert to fraction form
    383,755.20/575,580.96 = 103,289.28/x
  3. Step 3: Cross multiply
    383,755.20x = 575,580.96 × 103,289.28
  4. Step 4: Simplify right side
    383,755.20x = 59,451,342,940.11
  5. Step 5: Solve for x
    x = 59,451,342,940.11/383,755.20
  6. Step 6: Final answer
    x = 154,919.97

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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.