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Finding the Fourth Proportional to 228,481.08, 315,093.18 and 156,734.52

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Solution

The fourth proportional to 228,481.08, 315,093.18 and 156,734.52 is: 216,149.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,481.08 : 315,093.18 = 156,734.52 : x
  2. Step 2: Convert to fraction form
    228,481.08/315,093.18 = 156,734.52/x
  3. Step 3: Cross multiply
    228,481.08x = 315,093.18 × 156,734.52
  4. Step 4: Simplify right side
    228,481.08x = 49,385,978,322.57
  5. Step 5: Solve for x
    x = 49,385,978,322.57/228,481.08
  6. Step 6: Final answer
    x = 216,149.09

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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.