Finding the Fourth Proportional to 282,543.19, 389,909.75 and 155,226.98
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Solution
The fourth proportional to 282,543.19, 389,909.75 and 155,226.98 is: 214,213.32
Step by Step Solution
- Step 1: Write the proportion equation
282,543.19 : 389,909.75 = 155,226.98 : x - Step 2: Convert to fraction form
282,543.19/389,909.75 = 155,226.98/x - Step 3: Cross multiply
282,543.19x = 389,909.75 × 155,226.98 - Step 4: Simplify right side
282,543.19x = 60,524,514,036.85 - Step 5: Solve for x
x = 60,524,514,036.85/282,543.19 - Step 6: Final answer
x = 214,213.32
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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.