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Finding the Fourth Proportional to 393,394.20, 590,090.40 and 168,608.88

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Solution

The fourth proportional to 393,394.20, 590,090.40 and 168,608.88 is: 252,912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,394.20 : 590,090.40 = 168,608.88 : x
  2. Step 2: Convert to fraction form
    393,394.20/590,090.40 = 168,608.88/x
  3. Step 3: Cross multiply
    393,394.20x = 590,090.40 × 168,608.88
  4. Step 4: Simplify right side
    393,394.20x = 99,494,481,442.75
  5. Step 5: Solve for x
    x = 99,494,481,442.75/393,394.20
  6. Step 6: Final answer
    x = 252,912.93

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1.5x scale

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.