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Finding the Fourth Proportional to 228,905.26, 315,889.94 and 126,937.92

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Solution

The fourth proportional to 228,905.26, 315,889.94 and 126,937.92 is: 175,174.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,905.26 : 315,889.94 = 126,937.92 : x
  2. Step 2: Convert to fraction form
    228,905.26/315,889.94 = 126,937.92/x
  3. Step 3: Cross multiply
    228,905.26x = 315,889.94 × 126,937.92
  4. Step 4: Simplify right side
    228,905.26x = 40,098,411,932.52
  5. Step 5: Solve for x
    x = 40,098,411,932.52/228,905.26
  6. Step 6: Final answer
    x = 175,174.71

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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.