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Finding the Fourth Proportional to 383,419.80, 529,121.44 and 222,370.36

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Solution

The fourth proportional to 383,419.80, 529,121.44 and 222,370.36 is: 306,872.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,419.80 : 529,121.44 = 222,370.36 : x
  2. Step 2: Convert to fraction form
    383,419.80/529,121.44 = 222,370.36/x
  3. Step 3: Cross multiply
    383,419.80x = 529,121.44 × 222,370.36
  4. Step 4: Simplify right side
    383,419.80x = 117,660,925,096.52
  5. Step 5: Solve for x
    x = 117,660,925,096.52/383,419.80
  6. Step 6: Final answer
    x = 306,872.32

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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.