Finding the Fourth Proportional to 312,433.93, 431,156.67 and 169,190.69
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Solution
The fourth proportional to 312,433.93, 431,156.67 and 169,190.69 is: 233,481.99
Step by Step Solution
- Step 1: Write the proportion equation
312,433.93 : 431,156.67 = 169,190.69 : x - Step 2: Convert to fraction form
312,433.93/431,156.67 = 169,190.69/x - Step 3: Cross multiply
312,433.93x = 431,156.67 × 169,190.69 - Step 4: Simplify right side
312,433.93x = 72,947,694,495.40 - Step 5: Solve for x
x = 72,947,694,495.40/312,433.93 - Step 6: Final answer
x = 233,481.99
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1.5x scale
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.