Home / 257,739.35-355,682.24-143,018.45

Finding the Fourth Proportional to 257,739.35, 355,682.24 and 143,018.45

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Solution

The fourth proportional to 257,739.35, 355,682.24 and 143,018.45 is: 197,366.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,739.35 : 355,682.24 = 143,018.45 : x
  2. Step 2: Convert to fraction form
    257,739.35/355,682.24 = 143,018.45/x
  3. Step 3: Cross multiply
    257,739.35x = 355,682.24 × 143,018.45
  4. Step 4: Simplify right side
    257,739.35x = 50,869,120,163.82
  5. Step 5: Solve for x
    x = 50,869,120,163.82/257,739.35
  6. Step 6: Final answer
    x = 197,366.53

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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.