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Finding the Fourth Proportional to 303,410.10, 455,115.15 and 197,121.90

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Solution

The fourth proportional to 303,410.10, 455,115.15 and 197,121.90 is: 295,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,410.10 : 455,115.15 = 197,121.90 : x
  2. Step 2: Convert to fraction form
    303,410.10/455,115.15 = 197,121.90/x
  3. Step 3: Cross multiply
    303,410.10x = 455,115.15 × 197,121.90
  4. Step 4: Simplify right side
    303,410.10x = 89,713,163,086.79
  5. Step 5: Solve for x
    x = 89,713,163,086.79/303,410.10
  6. Step 6: Final answer
    x = 295,682.85

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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.