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Finding the Fourth Proportional to 255,211.52, 382,788.09 and 68,237.60

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Solution

The fourth proportional to 255,211.52, 382,788.09 and 68,237.60 is: 102,348.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,211.52 : 382,788.09 = 68,237.60 : x
  2. Step 2: Convert to fraction form
    255,211.52/382,788.09 = 68,237.60/x
  3. Step 3: Cross multiply
    255,211.52x = 382,788.09 × 68,237.60
  4. Step 4: Simplify right side
    255,211.52x = 26,120,538,656.24
  5. Step 5: Solve for x
    x = 26,120,538,656.24/255,211.52
  6. Step 6: Final answer
    x = 102,348.59

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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.