Finding the Fourth Proportional to 286,427.80, 428,987.26 and 136,772.92
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Solution
The fourth proportional to 286,427.80, 428,987.26 and 136,772.92 is: 204,846.88
Step by Step Solution
- Step 1: Write the proportion equation
286,427.80 : 428,987.26 = 136,772.92 : x - Step 2: Convert to fraction form
286,427.80/428,987.26 = 136,772.92/x - Step 3: Cross multiply
286,427.80x = 428,987.26 × 136,772.92 - Step 4: Simplify right side
286,427.80x = 58,673,840,193.00 - Step 5: Solve for x
x = 58,673,840,193.00/286,427.80 - Step 6: Final answer
x = 204,846.88
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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.