Finding the Fourth Proportional to 290,984.79, 436,495.64 and 91,313.06
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Solution
The fourth proportional to 290,984.79, 436,495.64 and 91,313.06 is: 136,975.38
Step by Step Solution
- Step 1: Write the proportion equation
290,984.79 : 436,495.64 = 91,313.06 : x - Step 2: Convert to fraction form
290,984.79/436,495.64 = 91,313.06/x - Step 3: Cross multiply
290,984.79x = 436,495.64 × 91,313.06 - Step 4: Simplify right side
290,984.79x = 39,857,751,734.09 - Step 5: Solve for x
x = 39,857,751,734.09/290,984.79 - Step 6: Final answer
x = 136,975.38
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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.