Home / 290,485.27-435,749.64-80,121.25

Finding the Fourth Proportional to 290,485.27, 435,749.64 and 80,121.25

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Solution

The fourth proportional to 290,485.27, 435,749.64 and 80,121.25 is: 120,187.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,485.27 : 435,749.64 = 80,121.25 : x
  2. Step 2: Convert to fraction form
    290,485.27/435,749.64 = 80,121.25/x
  3. Step 3: Cross multiply
    290,485.27x = 435,749.64 × 80,121.25
  4. Step 4: Simplify right side
    290,485.27x = 34,912,805,843.85
  5. Step 5: Solve for x
    x = 34,912,805,843.85/290,485.27
  6. Step 6: Final answer
    x = 120,187.87

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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.