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Finding the Fourth Proportional to 381,893.44, 526,943.46 and 220,689.40

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Solution

The fourth proportional to 381,893.44, 526,943.46 and 220,689.40 is: 304,511.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,893.44 : 526,943.46 = 220,689.40 : x
  2. Step 2: Convert to fraction form
    381,893.44/526,943.46 = 220,689.40/x
  3. Step 3: Cross multiply
    381,893.44x = 526,943.46 × 220,689.40
  4. Step 4: Simplify right side
    381,893.44x = 116,290,836,021.32
  5. Step 5: Solve for x
    x = 116,290,836,021.32/381,893.44
  6. Step 6: Final answer
    x = 304,511.22

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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.