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Finding the Fourth Proportional to 289,076.54, 398,660.60 and 248,226.80

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Solution

The fourth proportional to 289,076.54, 398,660.60 and 248,226.80 is: 342,325.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,076.54 : 398,660.60 = 248,226.80 : x
  2. Step 2: Convert to fraction form
    289,076.54/398,660.60 = 248,226.80/x
  3. Step 3: Cross multiply
    289,076.54x = 398,660.60 × 248,226.80
  4. Step 4: Simplify right side
    289,076.54x = 98,958,245,024.08
  5. Step 5: Solve for x
    x = 98,958,245,024.08/289,076.54
  6. Step 6: Final answer
    x = 342,325.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.