Finding the Fourth Proportional to 305,877.42, 421,993.08 and 225,496.08
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Solution
The fourth proportional to 305,877.42, 421,993.08 and 225,496.08 is: 311,097.78
Step by Step Solution
- Step 1: Write the proportion equation
305,877.42 : 421,993.08 = 225,496.08 : x - Step 2: Convert to fraction form
305,877.42/421,993.08 = 225,496.08/x - Step 3: Cross multiply
305,877.42x = 421,993.08 × 225,496.08 - Step 4: Simplify right side
305,877.42x = 95,157,785,327.13 - Step 5: Solve for x
x = 95,157,785,327.13/305,877.42 - Step 6: Final answer
x = 311,097.78
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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.