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Finding the Fourth Proportional to 383,468.76, 529,188.66 and 222,419.16

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Solution

The fourth proportional to 383,468.76, 529,188.66 and 222,419.16 is: 306,939.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,468.76 : 529,188.66 = 222,419.16 : x
  2. Step 2: Convert to fraction form
    383,468.76/529,188.66 = 222,419.16/x
  3. Step 3: Cross multiply
    383,468.76x = 529,188.66 × 222,419.16
  4. Step 4: Simplify right side
    383,468.76x = 117,701,697,238.73
  5. Step 5: Solve for x
    x = 117,701,697,238.73/383,468.76
  6. Step 6: Final answer
    x = 306,939.47

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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.