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Finding the Fourth Proportional to 228,513.78, 315,352.26 and 131,664.18

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Solution

The fourth proportional to 228,513.78, 315,352.26 and 131,664.18 is: 181,698.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,513.78 : 315,352.26 = 131,664.18 : x
  2. Step 2: Convert to fraction form
    228,513.78/315,352.26 = 131,664.18/x
  3. Step 3: Cross multiply
    228,513.78x = 315,352.26 × 131,664.18
  4. Step 4: Simplify right side
    228,513.78x = 41,520,596,724.05
  5. Step 5: Solve for x
    x = 41,520,596,724.05/228,513.78
  6. Step 6: Final answer
    x = 181,698.44

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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.