Finding the Fourth Proportional to 422,476.20, 633,755.70 and 122,959.80
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Solution
The fourth proportional to 422,476.20, 633,755.70 and 122,959.80 is: 184,451.75
Step by Step Solution
- Step 1: Write the proportion equation
422,476.20 : 633,755.70 = 122,959.80 : x - Step 2: Convert to fraction form
422,476.20/633,755.70 = 122,959.80/x - Step 3: Cross multiply
422,476.20x = 633,755.70 × 122,959.80 - Step 4: Simplify right side
422,476.20x = 77,926,474,120.86 - Step 5: Solve for x
x = 77,926,474,120.86/422,476.20 - Step 6: Final answer
x = 184,451.75
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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.