Home / 254,455.40-381,610.20-76,919.60

Finding the Fourth Proportional to 254,455.40, 381,610.20 and 76,919.60

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Solution

The fourth proportional to 254,455.40, 381,610.20 and 76,919.60 is: 115,357.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,455.40 : 381,610.20 = 76,919.60 : x
  2. Step 2: Convert to fraction form
    254,455.40/381,610.20 = 76,919.60/x
  3. Step 3: Cross multiply
    254,455.40x = 381,610.20 × 76,919.60
  4. Step 4: Simplify right side
    254,455.40x = 29,353,303,939.92
  5. Step 5: Solve for x
    x = 29,353,303,939.92/254,455.40
  6. Step 6: Final answer
    x = 115,357.36

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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.