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Finding the Fourth Proportional to 275,290.76, 379,930.02 and 154,464.68

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Solution

The fourth proportional to 275,290.76, 379,930.02 and 154,464.68 is: 213,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,290.76 : 379,930.02 = 154,464.68 : x
  2. Step 2: Convert to fraction form
    275,290.76/379,930.02 = 154,464.68/x
  3. Step 3: Cross multiply
    275,290.76x = 379,930.02 × 154,464.68
  4. Step 4: Simplify right side
    275,290.76x = 58,685,768,961.69
  5. Step 5: Solve for x
    x = 58,685,768,961.69/275,290.76
  6. Step 6: Final answer
    x = 213,177.40

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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.