Home / 312,430.44-431,161.38-178,306.92

Finding the Fourth Proportional to 312,430.44, 431,161.38 and 178,306.92

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Solution

The fourth proportional to 312,430.44, 431,161.38 and 178,306.92 is: 246,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,430.44 : 431,161.38 = 178,306.92 : x
  2. Step 2: Convert to fraction form
    312,430.44/431,161.38 = 178,306.92/x
  3. Step 3: Cross multiply
    312,430.44x = 431,161.38 × 178,306.92
  4. Step 4: Simplify right side
    312,430.44x = 76,879,057,690.75
  5. Step 5: Solve for x
    x = 76,879,057,690.75/312,430.44
  6. Step 6: Final answer
    x = 246,067.76

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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.