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Finding the Fourth Proportional to 383,197.48, 528,629.38 and 297,729.64

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Solution

The fourth proportional to 383,197.48, 528,629.38 and 297,729.64 is: 410,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,197.48 : 528,629.38 = 297,729.64 : x
  2. Step 2: Convert to fraction form
    383,197.48/528,629.38 = 297,729.64/x
  3. Step 3: Cross multiply
    383,197.48x = 528,629.38 × 297,729.64
  4. Step 4: Simplify right side
    383,197.48x = 157,388,635,000.82
  5. Step 5: Solve for x
    x = 157,388,635,000.82/383,197.48
  6. Step 6: Final answer
    x = 410,724.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.