Finding the Fourth Proportional to 268,855.16, 403,342.74 and 81,881.08
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Solution
The fourth proportional to 268,855.16, 403,342.74 and 81,881.08 is: 122,839.89
Step by Step Solution
- Step 1: Write the proportion equation
268,855.16 : 403,342.74 = 81,881.08 : x - Step 2: Convert to fraction form
268,855.16/403,342.74 = 81,881.08/x - Step 3: Cross multiply
268,855.16x = 403,342.74 × 81,881.08 - Step 4: Simplify right side
268,855.16x = 33,026,139,161.36 - Step 5: Solve for x
x = 33,026,139,161.36/268,855.16 - Step 6: Final answer
x = 122,839.89
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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.