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Finding the Fourth Proportional to 199,139.80, 299,292.90 and 195,640.60

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Solution

The fourth proportional to 199,139.80, 299,292.90 and 195,640.60 is: 294,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,139.80 : 299,292.90 = 195,640.60 : x
  2. Step 2: Convert to fraction form
    199,139.80/299,292.90 = 195,640.60/x
  3. Step 3: Cross multiply
    199,139.80x = 299,292.90 × 195,640.60
  4. Step 4: Simplify right side
    199,139.80x = 58,553,842,531.74
  5. Step 5: Solve for x
    x = 58,553,842,531.74/199,139.80
  6. Step 6: Final answer
    x = 294,033.85

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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.