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Finding the Fourth Proportional to 383,428.74, 529,069.39 and 222,252.28

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Solution

The fourth proportional to 383,428.74, 529,069.39 and 222,252.28 is: 306,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,428.74 : 529,069.39 = 222,252.28 : x
  2. Step 2: Convert to fraction form
    383,428.74/529,069.39 = 222,252.28/x
  3. Step 3: Cross multiply
    383,428.74x = 529,069.39 × 222,252.28
  4. Step 4: Simplify right side
    383,428.74x = 117,586,878,205.71
  5. Step 5: Solve for x
    x = 117,586,878,205.71/383,428.74
  6. Step 6: Final answer
    x = 306,672.05

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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.