Finding the Fourth Proportional to 207,621.30, 311,431.95 and 155,133.30
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Solution
The fourth proportional to 207,621.30, 311,431.95 and 155,133.30 is: 232,699.95
Step by Step Solution
- Step 1: Write the proportion equation
207,621.30 : 311,431.95 = 155,133.30 : x - Step 2: Convert to fraction form
207,621.30/311,431.95 = 155,133.30/x - Step 3: Cross multiply
207,621.30x = 311,431.95 × 155,133.30 - Step 4: Simplify right side
207,621.30x = 48,313,466,128.94 - Step 5: Solve for x
x = 48,313,466,128.94/207,621.30 - Step 6: Final answer
x = 232,699.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.