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Finding the Fourth Proportional to 354,622.25, 489,380.33 and 193,480.65

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Solution

The fourth proportional to 354,622.25, 489,380.33 and 193,480.65 is: 267,004.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,622.25 : 489,380.33 = 193,480.65 : x
  2. Step 2: Convert to fraction form
    354,622.25/489,380.33 = 193,480.65/x
  3. Step 3: Cross multiply
    354,622.25x = 489,380.33 × 193,480.65
  4. Step 4: Simplify right side
    354,622.25x = 94,685,624,829.32
  5. Step 5: Solve for x
    x = 94,685,624,829.32/354,622.25
  6. Step 6: Final answer
    x = 267,004.18

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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.