Finding the Fourth Proportional to 290,836.74, 436,260.58 and 91,152.70
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Solution
The fourth proportional to 290,836.74, 436,260.58 and 91,152.70 is: 136,730.76
Step by Step Solution
- Step 1: Write the proportion equation
290,836.74 : 436,260.58 = 91,152.70 : x - Step 2: Convert to fraction form
290,836.74/436,260.58 = 91,152.70/x - Step 3: Cross multiply
290,836.74x = 436,260.58 × 91,152.70 - Step 4: Simplify right side
290,836.74x = 39,766,329,770.57 - Step 5: Solve for x
x = 39,766,329,770.57/290,836.74 - Step 6: Final answer
x = 136,730.76
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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.