Home / 257,279.44-355,062-144,109.12

Finding the Fourth Proportional to 257,279.44, 355,062 and 144,109.12

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Solution

The fourth proportional to 257,279.44, 355,062 and 144,109.12 is: 198,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,279.44 : 355,062 = 144,109.12 : x
  2. Step 2: Convert to fraction form
    257,279.44/355,062 = 144,109.12/x
  3. Step 3: Cross multiply
    257,279.44x = 355,062 × 144,109.12
  4. Step 4: Simplify right side
    257,279.44x = 51,167,672,365.44
  5. Step 5: Solve for x
    x = 51,167,672,365.44/257,279.44
  6. Step 6: Final answer
    x = 198,879.76

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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.