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Finding the Fourth Proportional to 255,243.86, 382,865.79 and 68,250.50

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Solution

The fourth proportional to 255,243.86, 382,865.79 and 68,250.50 is: 102,375.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,243.86 : 382,865.79 = 68,250.50 : x
  2. Step 2: Convert to fraction form
    255,243.86/382,865.79 = 68,250.50/x
  3. Step 3: Cross multiply
    255,243.86x = 382,865.79 × 68,250.50
  4. Step 4: Simplify right side
    255,243.86x = 26,130,781,600.40
  5. Step 5: Solve for x
    x = 26,130,781,600.40/255,243.86
  6. Step 6: Final answer
    x = 102,375.75

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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.