Home / 419,823.83-629,773.52-135,521.12

Finding the Fourth Proportional to 419,823.83, 629,773.52 and 135,521.12

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Solution

The fourth proportional to 419,823.83, 629,773.52 and 135,521.12 is: 203,293.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,823.83 : 629,773.52 = 135,521.12 : x
  2. Step 2: Convert to fraction form
    419,823.83/629,773.52 = 135,521.12/x
  3. Step 3: Cross multiply
    419,823.83x = 629,773.52 × 135,521.12
  4. Step 4: Simplify right side
    419,823.83x = 85,347,613,673.57
  5. Step 5: Solve for x
    x = 85,347,613,673.57/419,823.83
  6. Step 6: Final answer
    x = 203,293.87

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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.