Home / 285,986.07-428,842.71-105,947.97

Finding the Fourth Proportional to 285,986.07, 428,842.71 and 105,947.97

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Solution

The fourth proportional to 285,986.07, 428,842.71 and 105,947.97 is: 158,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,986.07 : 428,842.71 = 105,947.97 : x
  2. Step 2: Convert to fraction form
    285,986.07/428,842.71 = 105,947.97/x
  3. Step 3: Cross multiply
    285,986.07x = 428,842.71 × 105,947.97
  4. Step 4: Simplify right side
    285,986.07x = 45,435,014,573.80
  5. Step 5: Solve for x
    x = 45,435,014,573.80/285,986.07
  6. Step 6: Final answer
    x = 158,871.43

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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.