Finding the Fourth Proportional to 395,129.84, 545,279.22 and 213,843.08
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Solution
The fourth proportional to 395,129.84, 545,279.22 and 213,843.08 is: 295,103.47
Step by Step Solution
- Step 1: Write the proportion equation
395,129.84 : 545,279.22 = 213,843.08 : x - Step 2: Convert to fraction form
395,129.84/545,279.22 = 213,843.08/x - Step 3: Cross multiply
395,129.84x = 545,279.22 × 213,843.08 - Step 4: Simplify right side
395,129.84x = 116,604,187,864.80 - Step 5: Solve for x
x = 116,604,187,864.80/395,129.84 - Step 6: Final answer
x = 295,103.47
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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.