Home / 262,919.40-394,516.80-120,807.60

Finding the Fourth Proportional to 262,919.40, 394,516.80 and 120,807.60

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Solution

The fourth proportional to 262,919.40, 394,516.80 and 120,807.60 is: 181,274.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,919.40 : 394,516.80 = 120,807.60 : x
  2. Step 2: Convert to fraction form
    262,919.40/394,516.80 = 120,807.60/x
  3. Step 3: Cross multiply
    262,919.40x = 394,516.80 × 120,807.60
  4. Step 4: Simplify right side
    262,919.40x = 47,660,627,767.68
  5. Step 5: Solve for x
    x = 47,660,627,767.68/262,919.40
  6. Step 6: Final answer
    x = 181,274.67

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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.