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Finding the Fourth Proportional to 299,138.40, 448,270.20 and 254,523.60

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Solution

The fourth proportional to 299,138.40, 448,270.20 and 254,523.60 is: 381,413.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,138.40 : 448,270.20 = 254,523.60 : x
  2. Step 2: Convert to fraction form
    299,138.40/448,270.20 = 254,523.60/x
  3. Step 3: Cross multiply
    299,138.40x = 448,270.20 × 254,523.60
  4. Step 4: Simplify right side
    299,138.40x = 114,095,345,076.72
  5. Step 5: Solve for x
    x = 114,095,345,076.72/299,138.40
  6. Step 6: Final answer
    x = 381,413.24

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1.5x scale

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.