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Finding the Fourth Proportional to 395,694.78, 593,615.07 and 129,470.19

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Solution

The fourth proportional to 395,694.78, 593,615.07 and 129,470.19 is: 194,229.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,694.78 : 593,615.07 = 129,470.19 : x
  2. Step 2: Convert to fraction form
    395,694.78/593,615.07 = 129,470.19/x
  3. Step 3: Cross multiply
    395,694.78x = 593,615.07 × 129,470.19
  4. Step 4: Simplify right side
    395,694.78x = 76,855,455,899.76
  5. Step 5: Solve for x
    x = 76,855,455,899.76/395,694.78
  6. Step 6: Final answer
    x = 194,229.14

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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.