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Finding the Fourth Proportional to 395,610.91, 593,509.71 and 129,370.39

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Solution

The fourth proportional to 395,610.91, 593,509.71 and 129,370.39 is: 194,086.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,610.91 : 593,509.71 = 129,370.39 : x
  2. Step 2: Convert to fraction form
    395,610.91/593,509.71 = 129,370.39/x
  3. Step 3: Cross multiply
    395,610.91x = 593,509.71 × 129,370.39
  4. Step 4: Simplify right side
    395,610.91x = 76,782,582,651.49
  5. Step 5: Solve for x
    x = 76,782,582,651.49/395,610.91
  6. Step 6: Final answer
    x = 194,086.11

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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.