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Finding the Fourth Proportional to 381,694.72, 526,762.56 and 220,579.28

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Solution

The fourth proportional to 381,694.72, 526,762.56 and 220,579.28 is: 304,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,694.72 : 526,762.56 = 220,579.28 : x
  2. Step 2: Convert to fraction form
    381,694.72/526,762.56 = 220,579.28/x
  3. Step 3: Cross multiply
    381,694.72x = 526,762.56 × 220,579.28
  4. Step 4: Simplify right side
    381,694.72x = 116,192,906,215.76
  5. Step 5: Solve for x
    x = 116,192,906,215.76/381,694.72
  6. Step 6: Final answer
    x = 304,413.19

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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.