Home / 383,640.30-529,284.78-222,406.56

Finding the Fourth Proportional to 383,640.30, 529,284.78 and 222,406.56

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Solution

The fourth proportional to 383,640.30, 529,284.78 and 222,406.56 is: 306,840.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,640.30 : 529,284.78 = 222,406.56 : x
  2. Step 2: Convert to fraction form
    383,640.30/529,284.78 = 222,406.56/x
  3. Step 3: Cross multiply
    383,640.30x = 529,284.78 × 222,406.56
  4. Step 4: Simplify right side
    383,640.30x = 117,716,407,180.16
  5. Step 5: Solve for x
    x = 117,716,407,180.16/383,640.30
  6. Step 6: Final answer
    x = 306,840.57

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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.