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Finding the Fourth Proportional to 206,029.10, 308,978.13 and 192,580.51

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Solution

The fourth proportional to 206,029.10, 308,978.13 and 192,580.51 is: 288,809.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,029.10 : 308,978.13 = 192,580.51 : x
  2. Step 2: Convert to fraction form
    206,029.10/308,978.13 = 192,580.51/x
  3. Step 3: Cross multiply
    206,029.10x = 308,978.13 × 192,580.51
  4. Step 4: Simplify right side
    206,029.10x = 59,503,165,081.80
  5. Step 5: Solve for x
    x = 59,503,165,081.80/206,029.10
  6. Step 6: Final answer
    x = 288,809.53

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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.