Finding the Fourth Proportional to 312,604.64, 431,394.83 and 169,364.68
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Solution
The fourth proportional to 312,604.64, 431,394.83 and 169,364.68 is: 233,723.49
Step by Step Solution
- Step 1: Write the proportion equation
312,604.64 : 431,394.83 = 169,364.68 : x - Step 2: Convert to fraction form
312,604.64/431,394.83 = 169,364.68/x - Step 3: Cross multiply
312,604.64x = 431,394.83 × 169,364.68 - Step 4: Simplify right side
312,604.64x = 73,063,047,336.60 - Step 5: Solve for x
x = 73,063,047,336.60/312,604.64 - Step 6: Final answer
x = 233,723.49
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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.