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Finding the Fourth Proportional to 265,778.54, 398,385.78 and 130,652.12

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Solution

The fourth proportional to 265,778.54, 398,385.78 and 130,652.12 is: 195,839.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,778.54 : 398,385.78 = 130,652.12 : x
  2. Step 2: Convert to fraction form
    265,778.54/398,385.78 = 130,652.12/x
  3. Step 3: Cross multiply
    265,778.54x = 398,385.78 × 130,652.12
  4. Step 4: Simplify right side
    265,778.54x = 52,049,946,734.85
  5. Step 5: Solve for x
    x = 52,049,946,734.85/265,778.54
  6. Step 6: Final answer
    x = 195,839.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.