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Finding the Fourth Proportional to 265,633.44, 398,393.28 and 76,042.88

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Solution

The fourth proportional to 265,633.44, 398,393.28 and 76,042.88 is: 114,048.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,633.44 : 398,393.28 = 76,042.88 : x
  2. Step 2: Convert to fraction form
    265,633.44/398,393.28 = 76,042.88/x
  3. Step 3: Cross multiply
    265,633.44x = 398,393.28 × 76,042.88
  4. Step 4: Simplify right side
    265,633.44x = 30,294,972,383.85
  5. Step 5: Solve for x
    x = 30,294,972,383.85/265,633.44
  6. Step 6: Final answer
    x = 114,048.04

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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.