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Finding the Fourth Proportional to 354,389.76, 489,144.96 and 273,694.32

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Solution

The fourth proportional to 354,389.76, 489,144.96 and 273,694.32 is: 377,765.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,389.76 : 489,144.96 = 273,694.32 : x
  2. Step 2: Convert to fraction form
    354,389.76/489,144.96 = 273,694.32/x
  3. Step 3: Cross multiply
    354,389.76x = 489,144.96 × 273,694.32
  4. Step 4: Simplify right side
    354,389.76x = 133,876,197,208.63
  5. Step 5: Solve for x
    x = 133,876,197,208.63/354,389.76
  6. Step 6: Final answer
    x = 377,765.42

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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.