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Finding the Fourth Proportional to 228,372.92, 315,140.83 and 126,392.20

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Solution

The fourth proportional to 228,372.92, 315,140.83 and 126,392.20 is: 174,413.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,372.92 : 315,140.83 = 126,392.20 : x
  2. Step 2: Convert to fraction form
    228,372.92/315,140.83 = 126,392.20/x
  3. Step 3: Cross multiply
    228,372.92x = 315,140.83 × 126,392.20
  4. Step 4: Simplify right side
    228,372.92x = 39,831,341,709.69
  5. Step 5: Solve for x
    x = 39,831,341,709.69/228,372.92
  6. Step 6: Final answer
    x = 174,413.59

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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.