Home / 257,835.78-355,806.51-143,114.09

Finding the Fourth Proportional to 257,835.78, 355,806.51 and 143,114.09

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Solution

The fourth proportional to 257,835.78, 355,806.51 and 143,114.09 is: 197,493.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,835.78 : 355,806.51 = 143,114.09 : x
  2. Step 2: Convert to fraction form
    257,835.78/355,806.51 = 143,114.09/x
  3. Step 3: Cross multiply
    257,835.78x = 355,806.51 × 143,114.09
  4. Step 4: Simplify right side
    257,835.78x = 50,920,923,115.69
  5. Step 5: Solve for x
    x = 50,920,923,115.69/257,835.78
  6. Step 6: Final answer
    x = 197,493.63

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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.