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Finding the Fourth Proportional to 395,499.50, 593,280.13 and 129,286.92

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Solution

The fourth proportional to 395,499.50, 593,280.13 and 129,286.92 is: 193,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,499.50 : 593,280.13 = 129,286.92 : x
  2. Step 2: Convert to fraction form
    395,499.50/593,280.13 = 129,286.92/x
  3. Step 3: Cross multiply
    395,499.50x = 593,280.13 × 129,286.92
  4. Step 4: Simplify right side
    395,499.50x = 76,703,360,704.90
  5. Step 5: Solve for x
    x = 76,703,360,704.90/395,499.50
  6. Step 6: Final answer
    x = 193,940.47

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1.5x scale

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.