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Finding the Fourth Proportional to 329,730.30, 494,759.49 and 130,057.20

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Solution

The fourth proportional to 329,730.30, 494,759.49 and 130,057.20 is: 195,150.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,730.30 : 494,759.49 = 130,057.20 : x
  2. Step 2: Convert to fraction form
    329,730.30/494,759.49 = 130,057.20/x
  3. Step 3: Cross multiply
    329,730.30x = 494,759.49 × 130,057.20
  4. Step 4: Simplify right side
    329,730.30x = 64,347,033,942.83
  5. Step 5: Solve for x
    x = 64,347,033,942.83/329,730.30
  6. Step 6: Final answer
    x = 195,150.50

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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.