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Finding the Fourth Proportional to 255,940.20, 384,371.10 and 247,645.80

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Solution

The fourth proportional to 255,940.20, 384,371.10 and 247,645.80 is: 371,914.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,940.20 : 384,371.10 = 247,645.80 : x
  2. Step 2: Convert to fraction form
    255,940.20/384,371.10 = 247,645.80/x
  3. Step 3: Cross multiply
    255,940.20x = 384,371.10 × 247,645.80
  4. Step 4: Simplify right side
    255,940.20x = 95,187,888,556.38
  5. Step 5: Solve for x
    x = 95,187,888,556.38/255,940.20
  6. Step 6: Final answer
    x = 371,914.57

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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.