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Finding the Fourth Proportional to 383,344.54, 529,019.07 and 211,268.70

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Solution

The fourth proportional to 383,344.54, 529,019.07 and 211,268.70 is: 291,552.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,344.54 : 529,019.07 = 211,268.70 : x
  2. Step 2: Convert to fraction form
    383,344.54/529,019.07 = 211,268.70/x
  3. Step 3: Cross multiply
    383,344.54x = 529,019.07 × 211,268.70
  4. Step 4: Simplify right side
    383,344.54x = 111,765,170,475.53
  5. Step 5: Solve for x
    x = 111,765,170,475.53/383,344.54
  6. Step 6: Final answer
    x = 291,552.79

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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.