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Finding the Fourth Proportional to 228,295.98, 315,042.38 and 126,318.78

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Solution

The fourth proportional to 228,295.98, 315,042.38 and 126,318.78 is: 174,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,295.98 : 315,042.38 = 126,318.78 : x
  2. Step 2: Convert to fraction form
    228,295.98/315,042.38 = 126,318.78/x
  3. Step 3: Cross multiply
    228,295.98x = 315,042.38 × 126,318.78
  4. Step 4: Simplify right side
    228,295.98x = 39,795,769,089.90
  5. Step 5: Solve for x
    x = 39,795,769,089.90/228,295.98
  6. Step 6: Final answer
    x = 174,316.56

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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.