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Finding the Fourth Proportional to 329,904.20, 494,640.30 and 130,104.20

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Solution

The fourth proportional to 329,904.20, 494,640.30 and 130,104.20 is: 195,071.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,904.20 : 494,640.30 = 130,104.20 : x
  2. Step 2: Convert to fraction form
    329,904.20/494,640.30 = 130,104.20/x
  3. Step 3: Cross multiply
    329,904.20x = 494,640.30 × 130,104.20
  4. Step 4: Simplify right side
    329,904.20x = 64,354,780,519.26
  5. Step 5: Solve for x
    x = 64,354,780,519.26/329,904.20
  6. Step 6: Final answer
    x = 195,071.12

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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.