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Finding the Fourth Proportional to 330,943.05, 495,978.49 and 131,154.52

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Solution

The fourth proportional to 330,943.05, 495,978.49 and 131,154.52 is: 196,558.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,943.05 : 495,978.49 = 131,154.52 : x
  2. Step 2: Convert to fraction form
    330,943.05/495,978.49 = 131,154.52/x
  3. Step 3: Cross multiply
    330,943.05x = 495,978.49 × 131,154.52
  4. Step 4: Simplify right side
    330,943.05x = 65,049,820,786.27
  5. Step 5: Solve for x
    x = 65,049,820,786.27/330,943.05
  6. Step 6: Final answer
    x = 196,558.96

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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.