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Finding the Fourth Proportional to 278,804.16, 384,753.24 and 151,481.88

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Solution

The fourth proportional to 278,804.16, 384,753.24 and 151,481.88 is: 209,046.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,804.16 : 384,753.24 = 151,481.88 : x
  2. Step 2: Convert to fraction form
    278,804.16/384,753.24 = 151,481.88/x
  3. Step 3: Cross multiply
    278,804.16x = 384,753.24 × 151,481.88
  4. Step 4: Simplify right side
    278,804.16x = 58,283,144,131.29
  5. Step 5: Solve for x
    x = 58,283,144,131.29/278,804.16
  6. Step 6: Final answer
    x = 209,046.90

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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.