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Finding the Fourth Proportional to 395,351.64, 593,063.89 and 129,113.55

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Solution

The fourth proportional to 395,351.64, 593,063.89 and 129,113.55 is: 193,682.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,351.64 : 593,063.89 = 129,113.55 : x
  2. Step 2: Convert to fraction form
    395,351.64/593,063.89 = 129,113.55/x
  3. Step 3: Cross multiply
    395,351.64x = 593,063.89 × 129,113.55
  4. Step 4: Simplify right side
    395,351.64x = 76,572,583,891.93
  5. Step 5: Solve for x
    x = 76,572,583,891.93/395,351.64
  6. Step 6: Final answer
    x = 193,682.22

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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.