Finding the Fourth Proportional to 212,591.79, 293,639.99 and 154,355.63
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Solution
The fourth proportional to 212,591.79, 293,639.99 and 154,355.63 is: 213,201.95
Step by Step Solution
- Step 1: Write the proportion equation
212,591.79 : 293,639.99 = 154,355.63 : x - Step 2: Convert to fraction form
212,591.79/293,639.99 = 154,355.63/x - Step 3: Cross multiply
212,591.79x = 293,639.99 × 154,355.63 - Step 4: Simplify right side
212,591.79x = 45,324,983,409.67 - Step 5: Solve for x
x = 45,324,983,409.67/212,591.79 - Step 6: Final answer
x = 213,201.95
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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.