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Finding the Fourth Proportional to 617,021.20, 925,350.24 and 279,866.80

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Solution

The fourth proportional to 617,021.20, 925,350.24 and 279,866.80 is: 419,717.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,021.20 : 925,350.24 = 279,866.80 : x
  2. Step 2: Convert to fraction form
    617,021.20/925,350.24 = 279,866.80/x
  3. Step 3: Cross multiply
    617,021.20x = 925,350.24 × 279,866.80
  4. Step 4: Simplify right side
    617,021.20x = 258,974,810,548.03
  5. Step 5: Solve for x
    x = 258,974,810,548.03/617,021.20
  6. Step 6: Final answer
    x = 419,717.85

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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.