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Finding the Fourth Proportional to 330,156.20, 495,234.30 and 328,187.90

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Solution

The fourth proportional to 330,156.20, 495,234.30 and 328,187.90 is: 492,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,156.20 : 495,234.30 = 328,187.90 : x
  2. Step 2: Convert to fraction form
    330,156.20/495,234.30 = 328,187.90/x
  3. Step 3: Cross multiply
    330,156.20x = 495,234.30 × 328,187.90
  4. Step 4: Simplify right side
    330,156.20x = 162,529,904,924.97
  5. Step 5: Solve for x
    x = 162,529,904,924.97/330,156.20
  6. Step 6: Final answer
    x = 492,281.85

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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.