Finding the Fourth Proportional to 268,872.48, 403,241.76 and 81,881.28
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Solution
The fourth proportional to 268,872.48, 403,241.76 and 81,881.28 is: 122,801.53
Step by Step Solution
- Step 1: Write the proportion equation
268,872.48 : 403,241.76 = 81,881.28 : x - Step 2: Convert to fraction form
268,872.48/403,241.76 = 81,881.28/x - Step 3: Cross multiply
268,872.48x = 403,241.76 × 81,881.28 - Step 4: Simplify right side
268,872.48x = 33,017,951,458.25 - Step 5: Solve for x
x = 33,017,951,458.25/268,872.48 - Step 6: Final answer
x = 122,801.53
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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.