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Finding the Fourth Proportional to 351,658.68, 485,324.46 and 208,442.04

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Solution

The fourth proportional to 351,658.68, 485,324.46 and 208,442.04 is: 287,671.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,658.68 : 485,324.46 = 208,442.04 : x
  2. Step 2: Convert to fraction form
    351,658.68/485,324.46 = 208,442.04/x
  3. Step 3: Cross multiply
    351,658.68x = 485,324.46 × 208,442.04
  4. Step 4: Simplify right side
    351,658.68x = 101,162,020,504.30
  5. Step 5: Solve for x
    x = 101,162,020,504.30/351,658.68
  6. Step 6: Final answer
    x = 287,671.05

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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.