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Finding the Fourth Proportional to 363,906.40, 545,859.60 and 221,605.60

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Solution

The fourth proportional to 363,906.40, 545,859.60 and 221,605.60 is: 332,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,906.40 : 545,859.60 = 221,605.60 : x
  2. Step 2: Convert to fraction form
    363,906.40/545,859.60 = 221,605.60/x
  3. Step 3: Cross multiply
    363,906.40x = 545,859.60 × 221,605.60
  4. Step 4: Simplify right side
    363,906.40x = 120,965,544,173.76
  5. Step 5: Solve for x
    x = 120,965,544,173.76/363,906.40
  6. Step 6: Final answer
    x = 332,408.40

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1.5x scale

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.