Finding the Fourth Proportional to 290,837.99, 436,266.70 and 80,458.31
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Solution
The fourth proportional to 290,837.99, 436,266.70 and 80,458.31 is: 120,690.15
Step by Step Solution
- Step 1: Write the proportion equation
290,837.99 : 436,266.70 = 80,458.31 : x - Step 2: Convert to fraction form
290,837.99/436,266.70 = 80,458.31/x - Step 3: Cross multiply
290,837.99x = 436,266.70 × 80,458.31 - Step 4: Simplify right side
290,837.99x = 35,101,281,391.28 - Step 5: Solve for x
x = 35,101,281,391.28/290,837.99 - Step 6: Final answer
x = 120,690.15
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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.