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Finding the Fourth Proportional to 247,940.80, 371,911.20 and 148,213.60

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Solution

The fourth proportional to 247,940.80, 371,911.20 and 148,213.60 is: 222,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,940.80 : 371,911.20 = 148,213.60 : x
  2. Step 2: Convert to fraction form
    247,940.80/371,911.20 = 148,213.60/x
  3. Step 3: Cross multiply
    247,940.80x = 371,911.20 × 148,213.60
  4. Step 4: Simplify right side
    247,940.80x = 55,122,297,832.32
  5. Step 5: Solve for x
    x = 55,122,297,832.32/247,940.80
  6. Step 6: Final answer
    x = 222,320.40

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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.