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Finding the Fourth Proportional to 393,375.40, 589,625.70 and 168,697.60

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Solution

The fourth proportional to 393,375.40, 589,625.70 and 168,697.60 is: 252,858.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,375.40 : 589,625.70 = 168,697.60 : x
  2. Step 2: Convert to fraction form
    393,375.40/589,625.70 = 168,697.60/x
  3. Step 3: Cross multiply
    393,375.40x = 589,625.70 × 168,697.60
  4. Step 4: Simplify right side
    393,375.40x = 99,468,440,488.32
  5. Step 5: Solve for x
    x = 99,468,440,488.32/393,375.40
  6. Step 6: Final answer
    x = 252,858.82

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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.