Finding the Fourth Proportional to 288,394.36, 431,739.60 and 213,013.96
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Solution
The fourth proportional to 288,394.36, 431,739.60 and 213,013.96 is: 318,891.68
Step by Step Solution
- Step 1: Write the proportion equation
288,394.36 : 431,739.60 = 213,013.96 : x - Step 2: Convert to fraction form
288,394.36/431,739.60 = 213,013.96/x - Step 3: Cross multiply
288,394.36x = 431,739.60 × 213,013.96 - Step 4: Simplify right side
288,394.36x = 91,966,561,884.82 - Step 5: Solve for x
x = 91,966,561,884.82/288,394.36 - Step 6: Final answer
x = 318,891.68
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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.