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Finding the Fourth Proportional to 361,906.20, 542,859.30 and 272,093.40

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Solution

The fourth proportional to 361,906.20, 542,859.30 and 272,093.40 is: 408,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,906.20 : 542,859.30 = 272,093.40 : x
  2. Step 2: Convert to fraction form
    361,906.20/542,859.30 = 272,093.40/x
  3. Step 3: Cross multiply
    361,906.20x = 542,859.30 × 272,093.40
  4. Step 4: Simplify right side
    361,906.20x = 147,708,432,658.62
  5. Step 5: Solve for x
    x = 147,708,432,658.62/361,906.20
  6. Step 6: Final answer
    x = 408,140.10

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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.