Home / 257,741.42-355,685.09-143,020.51

Finding the Fourth Proportional to 257,741.42, 355,685.09 and 143,020.51

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Solution

The fourth proportional to 257,741.42, 355,685.09 and 143,020.51 is: 197,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,741.42 : 355,685.09 = 143,020.51 : x
  2. Step 2: Convert to fraction form
    257,741.42/355,685.09 = 143,020.51/x
  3. Step 3: Cross multiply
    257,741.42x = 355,685.09 × 143,020.51
  4. Step 4: Simplify right side
    257,741.42x = 50,870,261,366.88
  5. Step 5: Solve for x
    x = 50,870,261,366.88/257,741.42
  6. Step 6: Final answer
    x = 197,369.37

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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.