Home / 424,165.20-636,231.15-143,682.42

Finding the Fourth Proportional to 424,165.20, 636,231.15 and 143,682.42

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Solution

The fourth proportional to 424,165.20, 636,231.15 and 143,682.42 is: 215,517.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,165.20 : 636,231.15 = 143,682.42 : x
  2. Step 2: Convert to fraction form
    424,165.20/636,231.15 = 143,682.42/x
  3. Step 3: Cross multiply
    424,165.20x = 636,231.15 × 143,682.42
  4. Step 4: Simplify right side
    424,165.20x = 91,415,231,311.38
  5. Step 5: Solve for x
    x = 91,415,231,311.38/424,165.20
  6. Step 6: Final answer
    x = 215,517.99

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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.