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Finding the Fourth Proportional to 278,691.06, 417,638.07 and 222,701.43

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Solution

The fourth proportional to 278,691.06, 417,638.07 and 222,701.43 is: 333,733.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,691.06 : 417,638.07 = 222,701.43 : x
  2. Step 2: Convert to fraction form
    278,691.06/417,638.07 = 222,701.43/x
  3. Step 3: Cross multiply
    278,691.06x = 417,638.07 × 222,701.43
  4. Step 4: Simplify right side
    278,691.06x = 93,008,595,411.44
  5. Step 5: Solve for x
    x = 93,008,595,411.44/278,691.06
  6. Step 6: Final answer
    x = 333,733.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.