Home / 257,926.78-355,950.08-143,205.43

Finding the Fourth Proportional to 257,926.78, 355,950.08 and 143,205.43

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Solution

The fourth proportional to 257,926.78, 355,950.08 and 143,205.43 is: 197,629.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,926.78 : 355,950.08 = 143,205.43 : x
  2. Step 2: Convert to fraction form
    257,926.78/355,950.08 = 143,205.43/x
  3. Step 3: Cross multiply
    257,926.78x = 355,950.08 × 143,205.43
  4. Step 4: Simplify right side
    257,926.78x = 50,973,984,730.31
  5. Step 5: Solve for x
    x = 50,973,984,730.31/257,926.78
  6. Step 6: Final answer
    x = 197,629.67

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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.