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Finding the Fourth Proportional to 355,620.78, 532,785.18 and 205,544.10

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Solution

The fourth proportional to 355,620.78, 532,785.18 and 205,544.10 is: 307,942.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,620.78 : 532,785.18 = 205,544.10 : x
  2. Step 2: Convert to fraction form
    355,620.78/532,785.18 = 205,544.10/x
  3. Step 3: Cross multiply
    355,620.78x = 532,785.18 × 205,544.10
  4. Step 4: Simplify right side
    355,620.78x = 109,510,850,316.44
  5. Step 5: Solve for x
    x = 109,510,850,316.44/355,620.78
  6. Step 6: Final answer
    x = 307,942.78

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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.