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Finding the Fourth Proportional to 388,563.38, 582,818.33 and 238,826.78

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Solution

The fourth proportional to 388,563.38, 582,818.33 and 238,826.78 is: 358,223.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,563.38 : 582,818.33 = 238,826.78 : x
  2. Step 2: Convert to fraction form
    388,563.38/582,818.33 = 238,826.78/x
  3. Step 3: Cross multiply
    388,563.38x = 582,818.33 × 238,826.78
  4. Step 4: Simplify right side
    388,563.38x = 139,192,620,970.65
  5. Step 5: Solve for x
    x = 139,192,620,970.65/388,563.38
  6. Step 6: Final answer
    x = 358,223.73

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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.