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Finding the Fourth Proportional to 354,338.96, 489,186.74 and 245,601.32

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Solution

The fourth proportional to 354,338.96, 489,186.74 and 245,601.32 is: 339,067.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,338.96 : 489,186.74 = 245,601.32 : x
  2. Step 2: Convert to fraction form
    354,338.96/489,186.74 = 245,601.32/x
  3. Step 3: Cross multiply
    354,338.96x = 489,186.74 × 245,601.32
  4. Step 4: Simplify right side
    354,338.96x = 120,144,907,238.57
  5. Step 5: Solve for x
    x = 120,144,907,238.57/354,338.96
  6. Step 6: Final answer
    x = 339,067.74

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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.