Home / 258,745.20-388,002.60-118,546.80

Finding the Fourth Proportional to 258,745.20, 388,002.60 and 118,546.80

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Solution

The fourth proportional to 258,745.20, 388,002.60 and 118,546.80 is: 177,767.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,745.20 : 388,002.60 = 118,546.80 : x
  2. Step 2: Convert to fraction form
    258,745.20/388,002.60 = 118,546.80/x
  3. Step 3: Cross multiply
    258,745.20x = 388,002.60 × 118,546.80
  4. Step 4: Simplify right side
    258,745.20x = 45,996,466,621.68
  5. Step 5: Solve for x
    x = 45,996,466,621.68/258,745.20
  6. Step 6: Final answer
    x = 177,767.42

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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.