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Finding the Fourth Proportional to 318,729.60, 477,584.10 and 168,774.30

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Solution

The fourth proportional to 318,729.60, 477,584.10 and 168,774.30 is: 252,891.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,729.60 : 477,584.10 = 168,774.30 : x
  2. Step 2: Convert to fraction form
    318,729.60/477,584.10 = 168,774.30/x
  3. Step 3: Cross multiply
    318,729.60x = 477,584.10 × 168,774.30
  4. Step 4: Simplify right side
    318,729.60x = 80,603,922,168.63
  5. Step 5: Solve for x
    x = 80,603,922,168.63/318,729.60
  6. Step 6: Final answer
    x = 252,891.23

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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.