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Finding the Fourth Proportional to 354,920.54, 489,771.66 and 193,744.41

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Solution

The fourth proportional to 354,920.54, 489,771.66 and 193,744.41 is: 267,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,920.54 : 489,771.66 = 193,744.41 : x
  2. Step 2: Convert to fraction form
    354,920.54/489,771.66 = 193,744.41/x
  3. Step 3: Cross multiply
    354,920.54x = 489,771.66 × 193,744.41
  4. Step 4: Simplify right side
    354,920.54x = 94,890,520,191.32
  5. Step 5: Solve for x
    x = 94,890,520,191.32/354,920.54
  6. Step 6: Final answer
    x = 267,357.09

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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.