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Finding the Fourth Proportional to 206,886.60, 310,329.90 and 101,910.60

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Solution

The fourth proportional to 206,886.60, 310,329.90 and 101,910.60 is: 152,865.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,886.60 : 310,329.90 = 101,910.60 : x
  2. Step 2: Convert to fraction form
    206,886.60/310,329.90 = 101,910.60/x
  3. Step 3: Cross multiply
    206,886.60x = 310,329.90 × 101,910.60
  4. Step 4: Simplify right side
    206,886.60x = 31,625,906,306.94
  5. Step 5: Solve for x
    x = 31,625,906,306.94/206,886.60
  6. Step 6: Final answer
    x = 152,865.90

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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.