Home / 213,619.54-320,149-157,195.45

Finding the Fourth Proportional to 213,619.54, 320,149 and 157,195.45

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Solution

The fourth proportional to 213,619.54, 320,149 and 157,195.45 is: 235,586.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,619.54 : 320,149 = 157,195.45 : x
  2. Step 2: Convert to fraction form
    213,619.54/320,149 = 157,195.45/x
  3. Step 3: Cross multiply
    213,619.54x = 320,149 × 157,195.45
  4. Step 4: Simplify right side
    213,619.54x = 50,325,966,122.05
  5. Step 5: Solve for x
    x = 50,325,966,122.05/213,619.54
  6. Step 6: Final answer
    x = 235,586.90

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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.