Home / 217,947.96-300,768.44-122,454.60

Finding the Fourth Proportional to 217,947.96, 300,768.44 and 122,454.60

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Solution

The fourth proportional to 217,947.96, 300,768.44 and 122,454.60 is: 168,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,947.96 : 300,768.44 = 122,454.60 : x
  2. Step 2: Convert to fraction form
    217,947.96/300,768.44 = 122,454.60/x
  3. Step 3: Cross multiply
    217,947.96x = 300,768.44 × 122,454.60
  4. Step 4: Simplify right side
    217,947.96x = 36,830,479,012.82
  5. Step 5: Solve for x
    x = 36,830,479,012.82/217,947.96
  6. Step 6: Final answer
    x = 168,987.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.