Finding the Fourth Proportional to 290,778.19, 436,166.74 and 91,113.87
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Solution
The fourth proportional to 290,778.19, 436,166.74 and 91,113.87 is: 136,670.63
Step by Step Solution
- Step 1: Write the proportion equation
290,778.19 : 436,166.74 = 91,113.87 : x - Step 2: Convert to fraction form
290,778.19/436,166.74 = 91,113.87/x - Step 3: Cross multiply
290,778.19x = 436,166.74 × 91,113.87 - Step 4: Simplify right side
290,778.19x = 39,740,837,238.07 - Step 5: Solve for x
x = 39,740,837,238.07/290,778.19 - Step 6: Final answer
x = 136,670.63
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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.