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Finding the Fourth Proportional to 265,715.64, 398,763 and 147,481.56

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Solution

The fourth proportional to 265,715.64, 398,763 and 147,481.56 is: 221,327.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,715.64 : 398,763 = 147,481.56 : x
  2. Step 2: Convert to fraction form
    265,715.64/398,763 = 147,481.56/x
  3. Step 3: Cross multiply
    265,715.64x = 398,763 × 147,481.56
  4. Step 4: Simplify right side
    265,715.64x = 58,810,189,310.28
  5. Step 5: Solve for x
    x = 58,810,189,310.28/265,715.64
  6. Step 6: Final answer
    x = 221,327.54

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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.