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Finding the Fourth Proportional to 428,867, 591,836.94 and 250,053.56

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Solution

The fourth proportional to 428,867, 591,836.94 and 250,053.56 is: 345,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,867 : 591,836.94 = 250,053.56 : x
  2. Step 2: Convert to fraction form
    428,867/591,836.94 = 250,053.56/x
  3. Step 3: Cross multiply
    428,867x = 591,836.94 × 250,053.56
  4. Step 4: Simplify right side
    428,867x = 147,990,933,786.51
  5. Step 5: Solve for x
    x = 147,990,933,786.51/428,867
  6. Step 6: Final answer
    x = 345,074.19

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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.