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Finding the Fourth Proportional to 206,894.60, 310,414.80 and 199,604.60

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Solution

The fourth proportional to 206,894.60, 310,414.80 and 199,604.60 is: 299,477.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,894.60 : 310,414.80 = 199,604.60 : x
  2. Step 2: Convert to fraction form
    206,894.60/310,414.80 = 199,604.60/x
  3. Step 3: Cross multiply
    206,894.60x = 310,414.80 × 199,604.60
  4. Step 4: Simplify right side
    206,894.60x = 61,960,221,988.08
  5. Step 5: Solve for x
    x = 61,960,221,988.08/206,894.60
  6. Step 6: Final answer
    x = 299,477.23

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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.