Finding the Fourth Proportional to 285,799.44, 428,699.36 and 86,119.88
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Solution
The fourth proportional to 285,799.44, 428,699.36 and 86,119.88 is: 129,179.88
Step by Step Solution
- Step 1: Write the proportion equation
285,799.44 : 428,699.36 = 86,119.88 : x - Step 2: Convert to fraction form
285,799.44/428,699.36 = 86,119.88/x - Step 3: Cross multiply
285,799.44x = 428,699.36 × 86,119.88 - Step 4: Simplify right side
285,799.44x = 36,919,537,439.28 - Step 5: Solve for x
x = 36,919,537,439.28/285,799.44 - Step 6: Final answer
x = 129,179.88
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1.5x scale
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.