Finding the Fourth Proportional to 231,697.76, 319,577.79 and 212,639.07
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Solution
The fourth proportional to 231,697.76, 319,577.79 and 212,639.07 is: 293,290.39
Step by Step Solution
- Step 1: Write the proportion equation
231,697.76 : 319,577.79 = 212,639.07 : x - Step 2: Convert to fraction form
231,697.76/319,577.79 = 212,639.07/x - Step 3: Cross multiply
231,697.76x = 319,577.79 × 212,639.07 - Step 4: Simplify right side
231,697.76x = 67,954,724,058.26 - Step 5: Solve for x
x = 67,954,724,058.26/231,697.76 - Step 6: Final answer
x = 293,290.39
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1.5x scale
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.