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Finding the Fourth Proportional to 354,680.72, 489,471.20 and 193,544.60

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Solution

The fourth proportional to 354,680.72, 489,471.20 and 193,544.60 is: 267,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,680.72 : 489,471.20 = 193,544.60 : x
  2. Step 2: Convert to fraction form
    354,680.72/489,471.20 = 193,544.60/x
  3. Step 3: Cross multiply
    354,680.72x = 489,471.20 × 193,544.60
  4. Step 4: Simplify right side
    354,680.72x = 94,734,507,615.52
  5. Step 5: Solve for x
    x = 94,734,507,615.52/354,680.72
  6. Step 6: Final answer
    x = 267,097.99

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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.