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Finding the Fourth Proportional to 253,290.65, 379,436.69 and 205,959.17

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Solution

The fourth proportional to 253,290.65, 379,436.69 and 205,959.17 is: 308,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,290.65 : 379,436.69 = 205,959.17 : x
  2. Step 2: Convert to fraction form
    253,290.65/379,436.69 = 205,959.17/x
  3. Step 3: Cross multiply
    253,290.65x = 379,436.69 × 205,959.17
  4. Step 4: Simplify right side
    253,290.65x = 78,148,467,203.44
  5. Step 5: Solve for x
    x = 78,148,467,203.44/253,290.65
  6. Step 6: Final answer
    x = 308,532.78

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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.