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Finding the Fourth Proportional to 329,620.20, 494,430.30 and 92,959.80

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Solution

The fourth proportional to 329,620.20, 494,430.30 and 92,959.80 is: 139,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,620.20 : 494,430.30 = 92,959.80 : x
  2. Step 2: Convert to fraction form
    329,620.20/494,430.30 = 92,959.80/x
  3. Step 3: Cross multiply
    329,620.20x = 494,430.30 × 92,959.80
  4. Step 4: Simplify right side
    329,620.20x = 45,962,141,801.94
  5. Step 5: Solve for x
    x = 45,962,141,801.94/329,620.20
  6. Step 6: Final answer
    x = 139,439.70

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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.