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Finding the Fourth Proportional to 279,699.44, 419,560.68 and 146,505.20

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Solution

The fourth proportional to 279,699.44, 419,560.68 and 146,505.20 is: 219,763.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,699.44 : 419,560.68 = 146,505.20 : x
  2. Step 2: Convert to fraction form
    279,699.44/419,560.68 = 146,505.20/x
  3. Step 3: Cross multiply
    279,699.44x = 419,560.68 × 146,505.20
  4. Step 4: Simplify right side
    279,699.44x = 61,467,821,335.54
  5. Step 5: Solve for x
    x = 61,467,821,335.54/279,699.44
  6. Step 6: Final answer
    x = 219,763.83

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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.