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Finding the Fourth Proportional to 318,880.60, 477,399.30 and 194,464.60

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Solution

The fourth proportional to 318,880.60, 477,399.30 and 194,464.60 is: 291,134.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,880.60 : 477,399.30 = 194,464.60 : x
  2. Step 2: Convert to fraction form
    318,880.60/477,399.30 = 194,464.60/x
  3. Step 3: Cross multiply
    318,880.60x = 477,399.30 × 194,464.60
  4. Step 4: Simplify right side
    318,880.60x = 92,837,263,914.78
  5. Step 5: Solve for x
    x = 92,837,263,914.78/318,880.60
  6. Step 6: Final answer
    x = 291,134.88

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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.