Finding the Fourth Proportional to 259,246.20, 388,780.20 and 126,040.68
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Solution
The fourth proportional to 259,246.20, 388,780.20 and 126,040.68 is: 189,017.70
Step by Step Solution
- Step 1: Write the proportion equation
259,246.20 : 388,780.20 = 126,040.68 : x - Step 2: Convert to fraction form
259,246.20/388,780.20 = 126,040.68/x - Step 3: Cross multiply
259,246.20x = 388,780.20 × 126,040.68 - Step 4: Simplify right side
259,246.20x = 49,002,120,778.54 - Step 5: Solve for x
x = 49,002,120,778.54/259,246.20 - Step 6: Final answer
x = 189,017.70
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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.