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Finding the Fourth Proportional to 217,385.87, 299,992.22 and 120,604.40

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Solution

The fourth proportional to 217,385.87, 299,992.22 and 120,604.40 is: 166,433.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,385.87 : 299,992.22 = 120,604.40 : x
  2. Step 2: Convert to fraction form
    217,385.87/299,992.22 = 120,604.40/x
  3. Step 3: Cross multiply
    217,385.87x = 299,992.22 × 120,604.40
  4. Step 4: Simplify right side
    217,385.87x = 36,180,379,594.78
  5. Step 5: Solve for x
    x = 36,180,379,594.78/217,385.87
  6. Step 6: Final answer
    x = 166,433.91

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1.5x scale

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.