Finding the Fourth Proportional to 291,858.12, 402,734.70 and 215,418.96
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Solution
The fourth proportional to 291,858.12, 402,734.70 and 215,418.96 is: 297,256.39
Step by Step Solution
- Step 1: Write the proportion equation
291,858.12 : 402,734.70 = 215,418.96 : x - Step 2: Convert to fraction form
291,858.12/402,734.70 = 215,418.96/x - Step 3: Cross multiply
291,858.12x = 402,734.70 × 215,418.96 - Step 4: Simplify right side
291,858.12x = 86,756,690,229.91 - Step 5: Solve for x
x = 86,756,690,229.91/291,858.12 - Step 6: Final answer
x = 297,256.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.