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Finding the Fourth Proportional to 395,611.42, 593,510.46 and 129,370.90

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Solution

The fourth proportional to 395,611.42, 593,510.46 and 129,370.90 is: 194,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,611.42 : 593,510.46 = 129,370.90 : x
  2. Step 2: Convert to fraction form
    395,611.42/593,510.46 = 129,370.90/x
  3. Step 3: Cross multiply
    395,611.42x = 593,510.46 × 129,370.90
  4. Step 4: Simplify right side
    395,611.42x = 76,782,982,369.61
  5. Step 5: Solve for x
    x = 76,782,982,369.61/395,611.42
  6. Step 6: Final answer
    x = 194,086.87

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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.