Home / 257,833.38-355,804.55-143,105.33

Finding the Fourth Proportional to 257,833.38, 355,804.55 and 143,105.33

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Solution

The fourth proportional to 257,833.38, 355,804.55 and 143,105.33 is: 197,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,833.38 : 355,804.55 = 143,105.33 : x
  2. Step 2: Convert to fraction form
    257,833.38/355,804.55 = 143,105.33/x
  3. Step 3: Cross multiply
    257,833.38x = 355,804.55 × 143,105.33
  4. Step 4: Simplify right side
    257,833.38x = 50,917,528,253.88
  5. Step 5: Solve for x
    x = 50,917,528,253.88/257,833.38
  6. Step 6: Final answer
    x = 197,482.30

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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.