Finding the Fourth Proportional to 290,776.40, 436,163.16 and 77,543.84
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Solution
The fourth proportional to 290,776.40, 436,163.16 and 77,543.84 is: 116,315.38
Step by Step Solution
- Step 1: Write the proportion equation
290,776.40 : 436,163.16 = 77,543.84 : x - Step 2: Convert to fraction form
290,776.40/436,163.16 = 77,543.84/x - Step 3: Cross multiply
290,776.40x = 436,163.16 × 77,543.84 - Step 4: Simplify right side
290,776.40x = 33,821,766,292.93 - Step 5: Solve for x
x = 33,821,766,292.93/290,776.40 - Step 6: Final answer
x = 116,315.38
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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.