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Finding the Fourth Proportional to 329,963.10, 494,847.45 and 130,217.10

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Solution

The fourth proportional to 329,963.10, 494,847.45 and 130,217.10 is: 195,287.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,963.10 : 494,847.45 = 130,217.10 : x
  2. Step 2: Convert to fraction form
    329,963.10/494,847.45 = 130,217.10/x
  3. Step 3: Cross multiply
    329,963.10x = 494,847.45 × 130,217.10
  4. Step 4: Simplify right side
    329,963.10x = 64,437,599,881.40
  5. Step 5: Solve for x
    x = 64,437,599,881.40/329,963.10
  6. Step 6: Final answer
    x = 195,287.29

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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.