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Finding the Fourth Proportional to 329,638.60, 494,360.70 and 129,892.60

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Solution

The fourth proportional to 329,638.60, 494,360.70 and 129,892.60 is: 194,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,638.60 : 494,360.70 = 129,892.60 : x
  2. Step 2: Convert to fraction form
    329,638.60/494,360.70 = 129,892.60/x
  3. Step 3: Cross multiply
    329,638.60x = 494,360.70 × 129,892.60
  4. Step 4: Simplify right side
    329,638.60x = 64,213,796,660.82
  5. Step 5: Solve for x
    x = 64,213,796,660.82/329,638.60
  6. Step 6: Final answer
    x = 194,800.60

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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.