Finding the Fourth Proportional to 290,836.99, 436,265.20 and 80,457.31
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Solution
The fourth proportional to 290,836.99, 436,265.20 and 80,457.31 is: 120,688.65
Step by Step Solution
- Step 1: Write the proportion equation
290,836.99 : 436,265.20 = 80,457.31 : x - Step 2: Convert to fraction form
290,836.99/436,265.20 = 80,457.31/x - Step 3: Cross multiply
290,836.99x = 436,265.20 × 80,457.31 - Step 4: Simplify right side
290,836.99x = 35,100,724,438.61 - Step 5: Solve for x
x = 35,100,724,438.61/290,836.99 - Step 6: Final answer
x = 120,688.65
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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.