Finding the Fourth Proportional to 245,451.93, 338,725.68 and 138,021.02
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Solution
The fourth proportional to 245,451.93, 338,725.68 and 138,021.02 is: 190,470.14
Step by Step Solution
- Step 1: Write the proportion equation
245,451.93 : 338,725.68 = 138,021.02 : x - Step 2: Convert to fraction form
245,451.93/338,725.68 = 138,021.02/x - Step 3: Cross multiply
245,451.93x = 338,725.68 × 138,021.02 - Step 4: Simplify right side
245,451.93x = 46,751,262,912.81 - Step 5: Solve for x
x = 46,751,262,912.81/245,451.93 - Step 6: Final answer
x = 190,470.14
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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.