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Finding the Fourth Proportional to 647,243.20, 970,173.60 and 247,729.60

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Solution

The fourth proportional to 647,243.20, 970,173.60 and 247,729.60 is: 371,329.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,243.20 : 970,173.60 = 247,729.60 : x
  2. Step 2: Convert to fraction form
    647,243.20/970,173.60 = 247,729.60/x
  3. Step 3: Cross multiply
    647,243.20x = 970,173.60 × 247,729.60
  4. Step 4: Simplify right side
    647,243.20x = 240,340,717,858.56
  5. Step 5: Solve for x
    x = 240,340,717,858.56/647,243.20
  6. Step 6: Final answer
    x = 371,329.85

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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.