Finding the Fourth Proportional to 290,092.68, 435,149.97 and 90,412.29
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Solution
The fourth proportional to 290,092.68, 435,149.97 and 90,412.29 is: 135,621.85
Step by Step Solution
- Step 1: Write the proportion equation
290,092.68 : 435,149.97 = 90,412.29 : x - Step 2: Convert to fraction form
290,092.68/435,149.97 = 90,412.29/x - Step 3: Cross multiply
290,092.68x = 435,149.97 × 90,412.29 - Step 4: Simplify right side
290,092.68x = 39,342,905,281.13 - Step 5: Solve for x
x = 39,342,905,281.13/290,092.68 - Step 6: Final answer
x = 135,621.85
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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.