Finding the Fourth Proportional to 378,853.68, 522,820.80 and 206,770.08
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Solution
The fourth proportional to 378,853.68, 522,820.80 and 206,770.08 is: 285,344.20
Step by Step Solution
- Step 1: Write the proportion equation
378,853.68 : 522,820.80 = 206,770.08 : x - Step 2: Convert to fraction form
378,853.68/522,820.80 = 206,770.08/x - Step 3: Cross multiply
378,853.68x = 522,820.80 × 206,770.08 - Step 4: Simplify right side
378,853.68x = 108,103,698,641.66 - Step 5: Solve for x
x = 108,103,698,641.66/378,853.68 - Step 6: Final answer
x = 285,344.20
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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.