Home / 257,879.27-355,867.76-143,151.21

Finding the Fourth Proportional to 257,879.27, 355,867.76 and 143,151.21

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Solution

The fourth proportional to 257,879.27, 355,867.76 and 143,151.21 is: 197,545.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,879.27 : 355,867.76 = 143,151.21 : x
  2. Step 2: Convert to fraction form
    257,879.27/355,867.76 = 143,151.21/x
  3. Step 3: Cross multiply
    257,879.27x = 355,867.76 × 143,151.21
  4. Step 4: Simplify right side
    257,879.27x = 50,942,900,801.87
  5. Step 5: Solve for x
    x = 50,942,900,801.87/257,879.27
  6. Step 6: Final answer
    x = 197,545.54

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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.