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Finding the Fourth Proportional to 225,993.36, 338,989.70 and 92,779.78

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Solution

The fourth proportional to 225,993.36, 338,989.70 and 92,779.78 is: 139,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,993.36 : 338,989.70 = 92,779.78 : x
  2. Step 2: Convert to fraction form
    225,993.36/338,989.70 = 92,779.78/x
  3. Step 3: Cross multiply
    225,993.36x = 338,989.70 × 92,779.78
  4. Step 4: Simplify right side
    225,993.36x = 31,451,389,788.27
  5. Step 5: Solve for x
    x = 31,451,389,788.27/225,993.36
  6. Step 6: Final answer
    x = 139,169.53

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1.5x scale

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.