Home / 257,835.69-355,811.97-143,115.69

Finding the Fourth Proportional to 257,835.69, 355,811.97 and 143,115.69

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Solution

The fourth proportional to 257,835.69, 355,811.97 and 143,115.69 is: 197,498.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,835.69 : 355,811.97 = 143,115.69 : x
  2. Step 2: Convert to fraction form
    257,835.69/355,811.97 = 143,115.69/x
  3. Step 3: Cross multiply
    257,835.69x = 355,811.97 × 143,115.69
  4. Step 4: Simplify right side
    257,835.69x = 50,922,277,467.79
  5. Step 5: Solve for x
    x = 50,922,277,467.79/257,835.69
  6. Step 6: Final answer
    x = 197,498.95

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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.