Home / 419,269.56-629,002.62-138,786.72

Finding the Fourth Proportional to 419,269.56, 629,002.62 and 138,786.72

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Solution

The fourth proportional to 419,269.56, 629,002.62 and 138,786.72 is: 208,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,269.56 : 629,002.62 = 138,786.72 : x
  2. Step 2: Convert to fraction form
    419,269.56/629,002.62 = 138,786.72/x
  3. Step 3: Cross multiply
    419,269.56x = 629,002.62 × 138,786.72
  4. Step 4: Simplify right side
    419,269.56x = 87,297,210,501.21
  5. Step 5: Solve for x
    x = 87,297,210,501.21/419,269.56
  6. Step 6: Final answer
    x = 208,212.61

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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.