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Finding the Fourth Proportional to 275,495.52, 380,154.57 and 154,650.09

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Solution

The fourth proportional to 275,495.52, 380,154.57 and 154,650.09 is: 213,400.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,495.52 : 380,154.57 = 154,650.09 : x
  2. Step 2: Convert to fraction form
    275,495.52/380,154.57 = 154,650.09/x
  3. Step 3: Cross multiply
    275,495.52x = 380,154.57 × 154,650.09
  4. Step 4: Simplify right side
    275,495.52x = 58,790,938,464.41
  5. Step 5: Solve for x
    x = 58,790,938,464.41/275,495.52
  6. Step 6: Final answer
    x = 213,400.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.