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Finding the Fourth Proportional to 354,587.83, 489,311.08 and 201,604.55

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Solution

The fourth proportional to 354,587.83, 489,311.08 and 201,604.55 is: 278,202.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,587.83 : 489,311.08 = 201,604.55 : x
  2. Step 2: Convert to fraction form
    354,587.83/489,311.08 = 201,604.55/x
  3. Step 3: Cross multiply
    354,587.83x = 489,311.08 × 201,604.55
  4. Step 4: Simplify right side
    354,587.83x = 98,647,337,142.85
  5. Step 5: Solve for x
    x = 98,647,337,142.85/354,587.83
  6. Step 6: Final answer
    x = 278,202.83

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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.