Finding the Fourth Proportional to 286,422.48, 428,979.62 and 136,768.12
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Solution
The fourth proportional to 286,422.48, 428,979.62 and 136,768.12 is: 204,839.84
Step by Step Solution
- Step 1: Write the proportion equation
286,422.48 : 428,979.62 = 136,768.12 : x - Step 2: Convert to fraction form
286,422.48/428,979.62 = 136,768.12/x - Step 3: Cross multiply
286,422.48x = 428,979.62 × 136,768.12 - Step 4: Simplify right side
286,422.48x = 58,670,735,415.19 - Step 5: Solve for x
x = 58,670,735,415.19/286,422.48 - Step 6: Final answer
x = 204,839.84
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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.