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Finding the Fourth Proportional to 354,604.41, 489,334.19 and 201,621.15

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Solution

The fourth proportional to 354,604.41, 489,334.19 and 201,621.15 is: 278,225.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,604.41 : 489,334.19 = 201,621.15 : x
  2. Step 2: Convert to fraction form
    354,604.41/489,334.19 = 201,621.15/x
  3. Step 3: Cross multiply
    354,604.41x = 489,334.19 × 201,621.15
  4. Step 4: Simplify right side
    354,604.41x = 98,660,121,114.01
  5. Step 5: Solve for x
    x = 98,660,121,114.01/354,604.41
  6. Step 6: Final answer
    x = 278,225.87

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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.