Home / 212,734.20-318,947.70-119,268.60

Finding the Fourth Proportional to 212,734.20, 318,947.70 and 119,268.60

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Solution

The fourth proportional to 212,734.20, 318,947.70 and 119,268.60 is: 178,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,734.20 : 318,947.70 = 119,268.60 : x
  2. Step 2: Convert to fraction form
    212,734.20/318,947.70 = 119,268.60/x
  3. Step 3: Cross multiply
    212,734.20x = 318,947.70 × 119,268.60
  4. Step 4: Simplify right side
    212,734.20x = 38,040,445,652.22
  5. Step 5: Solve for x
    x = 38,040,445,652.22/212,734.20
  6. Step 6: Final answer
    x = 178,816.78

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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.