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Finding the Fourth Proportional to 284,079.78, 426,120.28 and 115,481.12

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Solution

The fourth proportional to 284,079.78, 426,120.28 and 115,481.12 is: 173,221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,079.78 : 426,120.28 = 115,481.12 : x
  2. Step 2: Convert to fraction form
    284,079.78/426,120.28 = 115,481.12/x
  3. Step 3: Cross multiply
    284,079.78x = 426,120.28 × 115,481.12
  4. Step 4: Simplify right side
    284,079.78x = 49,208,847,189.11
  5. Step 5: Solve for x
    x = 49,208,847,189.11/284,079.78
  6. Step 6: Final answer
    x = 173,221.93

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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.