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Finding the Fourth Proportional to 226,230.75, 339,389.87 and 85,978.44

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Solution

The fourth proportional to 226,230.75, 339,389.87 and 85,978.44 is: 128,984.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,230.75 : 339,389.87 = 85,978.44 : x
  2. Step 2: Convert to fraction form
    226,230.75/339,389.87 = 85,978.44/x
  3. Step 3: Cross multiply
    226,230.75x = 339,389.87 × 85,978.44
  4. Step 4: Simplify right side
    226,230.75x = 29,180,211,144.51
  5. Step 5: Solve for x
    x = 29,180,211,144.51/226,230.75
  6. Step 6: Final answer
    x = 128,984.28

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1.5x scale

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.