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Finding the Fourth Proportional to 228,128.67, 342,189.22 and 68,204.97

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Solution

The fourth proportional to 228,128.67, 342,189.22 and 68,204.97 is: 102,306.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,128.67 : 342,189.22 = 68,204.97 : x
  2. Step 2: Convert to fraction form
    228,128.67/342,189.22 = 68,204.97/x
  3. Step 3: Cross multiply
    228,128.67x = 342,189.22 × 68,204.97
  4. Step 4: Simplify right side
    228,128.67x = 23,339,005,484.42
  5. Step 5: Solve for x
    x = 23,339,005,484.42/228,128.67
  6. Step 6: Final answer
    x = 102,306.32

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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.