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Finding the Fourth Proportional to 228,794.50, 315,736.41 and 139,370.50

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Solution

The fourth proportional to 228,794.50, 315,736.41 and 139,370.50 is: 192,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,794.50 : 315,736.41 = 139,370.50 : x
  2. Step 2: Convert to fraction form
    228,794.50/315,736.41 = 139,370.50/x
  3. Step 3: Cross multiply
    228,794.50x = 315,736.41 × 139,370.50
  4. Step 4: Simplify right side
    228,794.50x = 44,004,341,329.91
  5. Step 5: Solve for x
    x = 44,004,341,329.91/228,794.50
  6. Step 6: Final answer
    x = 192,331.29

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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.