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Finding the Fourth Proportional to 578,687.79, 868,025.21 and 204,623.31

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Solution

The fourth proportional to 578,687.79, 868,025.21 and 204,623.31 is: 306,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,687.79 : 868,025.21 = 204,623.31 : x
  2. Step 2: Convert to fraction form
    578,687.79/868,025.21 = 204,623.31/x
  3. Step 3: Cross multiply
    578,687.79x = 868,025.21 × 204,623.31
  4. Step 4: Simplify right side
    578,687.79x = 177,618,190,610.53
  5. Step 5: Solve for x
    x = 177,618,190,610.53/578,687.79
  6. Step 6: Final answer
    x = 306,932.67

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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.