Home / 386,313.63-579,629.88-208,611.39

Finding the Fourth Proportional to 386,313.63, 579,629.88 and 208,611.39

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Solution

The fourth proportional to 386,313.63, 579,629.88 and 208,611.39 is: 313,003.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,313.63 : 579,629.88 = 208,611.39 : x
  2. Step 2: Convert to fraction form
    386,313.63/579,629.88 = 208,611.39/x
  3. Step 3: Cross multiply
    386,313.63x = 579,629.88 × 208,611.39
  4. Step 4: Simplify right side
    386,313.63x = 120,917,394,952.33
  5. Step 5: Solve for x
    x = 120,917,394,952.33/386,313.63
  6. Step 6: Final answer
    x = 313,003.18

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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.