Finding the Fourth Proportional to 203,563.21, 280,921.74 and 112,916.23
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Solution
The fourth proportional to 203,563.21, 280,921.74 and 112,916.23 is: 155,826.90
Step by Step Solution
- Step 1: Write the proportion equation
203,563.21 : 280,921.74 = 112,916.23 : x - Step 2: Convert to fraction form
203,563.21/280,921.74 = 112,916.23/x - Step 3: Cross multiply
203,563.21x = 280,921.74 × 112,916.23 - Step 4: Simplify right side
203,563.21x = 31,720,623,805.84 - Step 5: Solve for x
x = 31,720,623,805.84/203,563.21 - Step 6: Final answer
x = 155,826.90
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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.