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Finding the Fourth Proportional to 675,243.20, 1,012,231.20 and 254,801.60

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Solution

The fourth proportional to 675,243.20, 1,012,231.20 and 254,801.60 is: 381,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,243.20 : 1,012,231.20 = 254,801.60 : x
  2. Step 2: Convert to fraction form
    675,243.20/1,012,231.20 = 254,801.60/x
  3. Step 3: Cross multiply
    675,243.20x = 1,012,231.20 × 254,801.60
  4. Step 4: Simplify right side
    675,243.20x = 257,918,129,329.92
  5. Step 5: Solve for x
    x = 257,918,129,329.92/675,243.20
  6. Step 6: Final answer
    x = 381,963.31

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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.