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Finding the Fourth Proportional to 393,568.80, 590,061.60 and 168,745.20

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Solution

The fourth proportional to 393,568.80, 590,061.60 and 168,745.20 is: 252,992.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,568.80 : 590,061.60 = 168,745.20 : x
  2. Step 2: Convert to fraction form
    393,568.80/590,061.60 = 168,745.20/x
  3. Step 3: Cross multiply
    393,568.80x = 590,061.60 × 168,745.20
  4. Step 4: Simplify right side
    393,568.80x = 99,570,062,704.32
  5. Step 5: Solve for x
    x = 99,570,062,704.32/393,568.80
  6. Step 6: Final answer
    x = 252,992.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.