Home / 257,986.82-386,982.39-71,008.58

Finding the Fourth Proportional to 257,986.82, 386,982.39 and 71,008.58

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Solution

The fourth proportional to 257,986.82, 386,982.39 and 71,008.58 is: 106,513.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,986.82 : 386,982.39 = 71,008.58 : x
  2. Step 2: Convert to fraction form
    257,986.82/386,982.39 = 71,008.58/x
  3. Step 3: Cross multiply
    257,986.82x = 386,982.39 × 71,008.58
  4. Step 4: Simplify right side
    257,986.82x = 27,479,069,998.91
  5. Step 5: Solve for x
    x = 27,479,069,998.91/257,986.82
  6. Step 6: Final answer
    x = 106,513.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.