Finding the Fourth Proportional to 426,279.20, 638,968.28 and 141,893.87
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Solution
The fourth proportional to 426,279.20, 638,968.28 and 141,893.87 is: 212,690.84
Step by Step Solution
- Step 1: Write the proportion equation
426,279.20 : 638,968.28 = 141,893.87 : x - Step 2: Convert to fraction form
426,279.20/638,968.28 = 141,893.87/x - Step 3: Cross multiply
426,279.20x = 638,968.28 × 141,893.87 - Step 4: Simplify right side
426,279.20x = 90,665,678,152.13 - Step 5: Solve for x
x = 90,665,678,152.13/426,279.20 - Step 6: Final answer
x = 212,690.84
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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.