Finding the Fourth Proportional to 311,943.44, 430,449.57 and 230,315.09
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Solution
The fourth proportional to 311,943.44, 430,449.57 and 230,315.09 is: 317,810.92
Step by Step Solution
- Step 1: Write the proportion equation
311,943.44 : 430,449.57 = 230,315.09 : x - Step 2: Convert to fraction form
311,943.44/430,449.57 = 230,315.09/x - Step 3: Cross multiply
311,943.44x = 430,449.57 × 230,315.09 - Step 4: Simplify right side
311,943.44x = 99,139,029,302.76 - Step 5: Solve for x
x = 99,139,029,302.76/311,943.44 - Step 6: Final answer
x = 317,810.92
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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.