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Finding the Fourth Proportional to 386,396.86, 532,611.55 and 304,591.71

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Solution

The fourth proportional to 386,396.86, 532,611.55 and 304,591.71 is: 419,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,396.86 : 532,611.55 = 304,591.71 : x
  2. Step 2: Convert to fraction form
    386,396.86/532,611.55 = 304,591.71/x
  3. Step 3: Cross multiply
    386,396.86x = 532,611.55 × 304,591.71
  4. Step 4: Simplify right side
    386,396.86x = 162,229,062,780.25
  5. Step 5: Solve for x
    x = 162,229,062,780.25/386,396.86
  6. Step 6: Final answer
    x = 419,850.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.