Finding the Fourth Proportional to 305,351.20, 421,387.18 and 169,394.06
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Solution
The fourth proportional to 305,351.20, 421,387.18 and 169,394.06 is: 233,765.20
Step by Step Solution
- Step 1: Write the proportion equation
305,351.20 : 421,387.18 = 169,394.06 : x - Step 2: Convert to fraction form
305,351.20/421,387.18 = 169,394.06/x - Step 3: Cross multiply
305,351.20x = 421,387.18 × 169,394.06 - Step 4: Simplify right side
305,351.20x = 71,380,485,252.15 - Step 5: Solve for x
x = 71,380,485,252.15/305,351.20 - Step 6: Final answer
x = 233,765.20
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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.