Home / 257,815.31-355,779.79-143,087.27

Finding the Fourth Proportional to 257,815.31, 355,779.79 and 143,087.27

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Solution

The fourth proportional to 257,815.31, 355,779.79 and 143,087.27 is: 197,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,815.31 : 355,779.79 = 143,087.27 : x
  2. Step 2: Convert to fraction form
    257,815.31/355,779.79 = 143,087.27/x
  3. Step 3: Cross multiply
    257,815.31x = 355,779.79 × 143,087.27
  4. Step 4: Simplify right side
    257,815.31x = 50,907,556,735.66
  5. Step 5: Solve for x
    x = 50,907,556,735.66/257,815.31
  6. Step 6: Final answer
    x = 197,457.47

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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.