Home / 420,183.45-629,979.84-153,909.36

Finding the Fourth Proportional to 420,183.45, 629,979.84 and 153,909.36

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Solution

The fourth proportional to 420,183.45, 629,979.84 and 153,909.36 is: 230,755.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,183.45 : 629,979.84 = 153,909.36 : x
  2. Step 2: Convert to fraction form
    420,183.45/629,979.84 = 153,909.36/x
  3. Step 3: Cross multiply
    420,183.45x = 629,979.84 × 153,909.36
  4. Step 4: Simplify right side
    420,183.45x = 96,959,793,987.30
  5. Step 5: Solve for x
    x = 96,959,793,987.30/420,183.45
  6. Step 6: Final answer
    x = 230,755.86

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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.