Finding the Fourth Proportional to 258,357.09, 387,326.52 and 80,772.69
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Solution
The fourth proportional to 258,357.09, 387,326.52 and 80,772.69 is: 121,093.66
Step by Step Solution
- Step 1: Write the proportion equation
258,357.09 : 387,326.52 = 80,772.69 : x - Step 2: Convert to fraction form
258,357.09/387,326.52 = 80,772.69/x - Step 3: Cross multiply
258,357.09x = 387,326.52 × 80,772.69 - Step 4: Simplify right side
258,357.09x = 31,285,404,928.74 - Step 5: Solve for x
x = 31,285,404,928.74/258,357.09 - Step 6: Final answer
x = 121,093.66
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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.