Finding the Fourth Proportional to 312,185.86, 430,817.84 and 168,945.91
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Solution
The fourth proportional to 312,185.86, 430,817.84 and 168,945.91 is: 233,146.09
Step by Step Solution
- Step 1: Write the proportion equation
312,185.86 : 430,817.84 = 168,945.91 : x - Step 2: Convert to fraction form
312,185.86/430,817.84 = 168,945.91/x - Step 3: Cross multiply
312,185.86x = 430,817.84 × 168,945.91 - Step 4: Simplify right side
312,185.86x = 72,784,912,023.03 - Step 5: Solve for x
x = 72,784,912,023.03/312,185.86 - Step 6: Final answer
x = 233,146.09
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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.