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Finding the Fourth Proportional to 265,921.92, 398,886.39 and 88,428.96

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Solution

The fourth proportional to 265,921.92, 398,886.39 and 88,428.96 is: 132,644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,921.92 : 398,886.39 = 88,428.96 : x
  2. Step 2: Convert to fraction form
    265,921.92/398,886.39 = 88,428.96/x
  3. Step 3: Cross multiply
    265,921.92x = 398,886.39 × 88,428.96
  4. Step 4: Simplify right side
    265,921.92x = 35,273,108,625.85
  5. Step 5: Solve for x
    x = 35,273,108,625.85/265,921.92
  6. Step 6: Final answer
    x = 132,644.61

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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.