Home / 310,557.51-428,584.77-189,679.23

Finding the Fourth Proportional to 310,557.51, 428,584.77 and 189,679.23

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Solution

The fourth proportional to 310,557.51, 428,584.77 and 189,679.23 is: 261,766.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,557.51 : 428,584.77 = 189,679.23 : x
  2. Step 2: Convert to fraction form
    310,557.51/428,584.77 = 189,679.23/x
  3. Step 3: Cross multiply
    310,557.51x = 428,584.77 × 189,679.23
  4. Step 4: Simplify right side
    310,557.51x = 81,293,629,163.33
  5. Step 5: Solve for x
    x = 81,293,629,163.33/310,557.51
  6. Step 6: Final answer
    x = 261,766.75

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1.5x scale

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.