Home / 317,629.52-438,189-196,738.64

Finding the Fourth Proportional to 317,629.52, 438,189 and 196,738.64

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Solution

The fourth proportional to 317,629.52, 438,189 and 196,738.64 is: 271,412.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,629.52 : 438,189 = 196,738.64 : x
  2. Step 2: Convert to fraction form
    317,629.52/438,189 = 196,738.64/x
  3. Step 3: Cross multiply
    317,629.52x = 438,189 × 196,738.64
  4. Step 4: Simplify right side
    317,629.52x = 86,208,707,922.96
  5. Step 5: Solve for x
    x = 86,208,707,922.96/317,629.52
  6. Step 6: Final answer
    x = 271,412.77

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1.5x scale

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.