Finding the Fourth Proportional to 381,639.40, 571,998.30 and 194,554.60
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Solution
The fourth proportional to 381,639.40, 571,998.30 and 194,554.60 is: 291,596.99
Step by Step Solution
- Step 1: Write the proportion equation
381,639.40 : 571,998.30 = 194,554.60 : x - Step 2: Convert to fraction form
381,639.40/571,998.30 = 194,554.60/x - Step 3: Cross multiply
381,639.40x = 571,998.30 × 194,554.60 - Step 4: Simplify right side
381,639.40x = 111,284,900,457.18 - Step 5: Solve for x
x = 111,284,900,457.18/381,639.40 - Step 6: Final answer
x = 291,596.99
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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.