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Finding the Fourth Proportional to 354,738.29, 489,410.55 and 273,091.50

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Solution

The fourth proportional to 354,738.29, 489,410.55 and 273,091.50 is: 376,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,738.29 : 489,410.55 = 273,091.50 : x
  2. Step 2: Convert to fraction form
    354,738.29/489,410.55 = 273,091.50/x
  3. Step 3: Cross multiply
    354,738.29x = 489,410.55 × 273,091.50
  4. Step 4: Simplify right side
    354,738.29x = 133,653,861,215.33
  5. Step 5: Solve for x
    x = 133,653,861,215.33/354,738.29
  6. Step 6: Final answer
    x = 376,767.51

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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.