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Finding the Fourth Proportional to 275,415.60, 412,540.20 and 245,866.80

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Solution

The fourth proportional to 275,415.60, 412,540.20 and 245,866.80 is: 368,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,415.60 : 412,540.20 = 245,866.80 : x
  2. Step 2: Convert to fraction form
    275,415.60/412,540.20 = 245,866.80/x
  3. Step 3: Cross multiply
    275,415.60x = 412,540.20 × 245,866.80
  4. Step 4: Simplify right side
    275,415.60x = 101,429,938,845.36
  5. Step 5: Solve for x
    x = 101,429,938,845.36/275,415.60
  6. Step 6: Final answer
    x = 368,279.57

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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.