Finding the Fourth Proportional to 312,423.84, 431,142.48 and 169,183.44
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Solution
The fourth proportional to 312,423.84, 431,142.48 and 169,183.44 is: 233,471.84
Step by Step Solution
- Step 1: Write the proportion equation
312,423.84 : 431,142.48 = 169,183.44 : x - Step 2: Convert to fraction form
312,423.84/431,142.48 = 169,183.44/x - Step 3: Cross multiply
312,423.84x = 431,142.48 × 169,183.44 - Step 4: Simplify right side
312,423.84x = 72,942,167,896.53 - Step 5: Solve for x
x = 72,942,167,896.53/312,423.84 - Step 6: Final answer
x = 233,471.84
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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.