Home / 354,370.20-489,040.72-216,571.44

Finding the Fourth Proportional to 354,370.20, 489,040.72 and 216,571.44

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Solution

The fourth proportional to 354,370.20, 489,040.72 and 216,571.44 is: 298,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,370.20 : 489,040.72 = 216,571.44 : x
  2. Step 2: Convert to fraction form
    354,370.20/489,040.72 = 216,571.44/x
  3. Step 3: Cross multiply
    354,370.20x = 489,040.72 × 216,571.44
  4. Step 4: Simplify right side
    354,370.20x = 105,912,252,949.04
  5. Step 5: Solve for x
    x = 105,912,252,949.04/354,370.20
  6. Step 6: Final answer
    x = 298,874.60

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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.