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Finding the Fourth Proportional to 423,694.99, 635,561.71 and 120,110.85

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Solution

The fourth proportional to 423,694.99, 635,561.71 and 120,110.85 is: 180,171.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,694.99 : 635,561.71 = 120,110.85 : x
  2. Step 2: Convert to fraction form
    423,694.99/635,561.71 = 120,110.85/x
  3. Step 3: Cross multiply
    423,694.99x = 635,561.71 × 120,110.85
  4. Step 4: Simplify right side
    423,694.99x = 76,337,856,915.28
  5. Step 5: Solve for x
    x = 76,337,856,915.28/423,694.99
  6. Step 6: Final answer
    x = 180,171.73

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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.