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Finding the Fourth Proportional to 617,025.20, 925,356.24 and 279,870.80

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Solution

The fourth proportional to 617,025.20, 925,356.24 and 279,870.80 is: 419,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,025.20 : 925,356.24 = 279,870.80 : x
  2. Step 2: Convert to fraction form
    617,025.20/925,356.24 = 279,870.80/x
  3. Step 3: Cross multiply
    617,025.20x = 925,356.24 × 279,870.80
  4. Step 4: Simplify right side
    617,025.20x = 258,980,191,173.79
  5. Step 5: Solve for x
    x = 258,980,191,173.79/617,025.20
  6. Step 6: Final answer
    x = 419,723.85

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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.