Finding the Fourth Proportional to 290,164.80, 435,197.07 and 76,934.19
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Solution
The fourth proportional to 290,164.80, 435,197.07 and 76,934.19 is: 115,387.99
Step by Step Solution
- Step 1: Write the proportion equation
290,164.80 : 435,197.07 = 76,934.19 : x - Step 2: Convert to fraction form
290,164.80/435,197.07 = 76,934.19/x - Step 3: Cross multiply
290,164.80x = 435,197.07 × 76,934.19 - Step 4: Simplify right side
290,164.80x = 33,481,534,070.82 - Step 5: Solve for x
x = 33,481,534,070.82/290,164.80 - Step 6: Final answer
x = 115,387.99
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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.