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Finding the Fourth Proportional to 675,253.20, 1,012,246.20 and 254,811.60

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Solution

The fourth proportional to 675,253.20, 1,012,246.20 and 254,811.60 is: 381,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,253.20 : 1,012,246.20 = 254,811.60 : x
  2. Step 2: Convert to fraction form
    675,253.20/1,012,246.20 = 254,811.60/x
  3. Step 3: Cross multiply
    675,253.20x = 1,012,246.20 × 254,811.60
  4. Step 4: Simplify right side
    675,253.20x = 257,932,073,815.92
  5. Step 5: Solve for x
    x = 257,932,073,815.92/675,253.20
  6. Step 6: Final answer
    x = 381,978.31

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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.