Home / 257,847.57-355,811.83-143,117.19

Finding the Fourth Proportional to 257,847.57, 355,811.83 and 143,117.19

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Solution

The fourth proportional to 257,847.57, 355,811.83 and 143,117.19 is: 197,491.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,847.57 : 355,811.83 = 143,117.19 : x
  2. Step 2: Convert to fraction form
    257,847.57/355,811.83 = 143,117.19/x
  3. Step 3: Cross multiply
    257,847.57x = 355,811.83 × 143,117.19
  4. Step 4: Simplify right side
    257,847.57x = 50,922,789,278.36
  5. Step 5: Solve for x
    x = 50,922,789,278.36/257,847.57
  6. Step 6: Final answer
    x = 197,491.83

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Double scale
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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.