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Finding the Fourth Proportional to 388,650.24, 582,912 and 108,103.68

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Solution

The fourth proportional to 388,650.24, 582,912 and 108,103.68 is: 162,137.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,650.24 : 582,912 = 108,103.68 : x
  2. Step 2: Convert to fraction form
    388,650.24/582,912 = 108,103.68/x
  3. Step 3: Cross multiply
    388,650.24x = 582,912 × 108,103.68
  4. Step 4: Simplify right side
    388,650.24x = 63,014,932,316.16
  5. Step 5: Solve for x
    x = 63,014,932,316.16/388,650.24
  6. Step 6: Final answer
    x = 162,137.90

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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.