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Finding the Fourth Proportional to 279,428.58, 419,072.86 and 119,425.44

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Solution

The fourth proportional to 279,428.58, 419,072.86 and 119,425.44 is: 179,108.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,428.58 : 419,072.86 = 119,425.44 : x
  2. Step 2: Convert to fraction form
    279,428.58/419,072.86 = 119,425.44/x
  3. Step 3: Cross multiply
    279,428.58x = 419,072.86 × 119,425.44
  4. Step 4: Simplify right side
    279,428.58x = 50,047,960,697.56
  5. Step 5: Solve for x
    x = 50,047,960,697.56/279,428.58
  6. Step 6: Final answer
    x = 179,108.24

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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.