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Finding the Fourth Proportional to 265,780.50, 398,738.10 and 88,288.44

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Solution

The fourth proportional to 265,780.50, 398,738.10 and 88,288.44 is: 132,455.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,780.50 : 398,738.10 = 88,288.44 : x
  2. Step 2: Convert to fraction form
    265,780.50/398,738.10 = 88,288.44/x
  3. Step 3: Cross multiply
    265,780.50x = 398,738.10 × 88,288.44
  4. Step 4: Simplify right side
    265,780.50x = 35,203,964,817.56
  5. Step 5: Solve for x
    x = 35,203,964,817.56/265,780.50
  6. Step 6: Final answer
    x = 132,455.03

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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.