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Finding the Fourth Proportional to 617,040.30, 925,906.05 and 261,993.90

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Solution

The fourth proportional to 617,040.30, 925,906.05 and 261,993.90 is: 393,137.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,040.30 : 925,906.05 = 261,993.90 : x
  2. Step 2: Convert to fraction form
    617,040.30/925,906.05 = 261,993.90/x
  3. Step 3: Cross multiply
    617,040.30x = 925,906.05 × 261,993.90
  4. Step 4: Simplify right side
    617,040.30x = 242,581,737,073.10
  5. Step 5: Solve for x
    x = 242,581,737,073.10/617,040.30
  6. Step 6: Final answer
    x = 393,137.59

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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.