Finding the Fourth Proportional to 214,975.80, 322,463.70 and 81,811.80
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Solution
The fourth proportional to 214,975.80, 322,463.70 and 81,811.80 is: 122,717.70
Step by Step Solution
- Step 1: Write the proportion equation
214,975.80 : 322,463.70 = 81,811.80 : x - Step 2: Convert to fraction form
214,975.80/322,463.70 = 81,811.80/x - Step 3: Cross multiply
214,975.80x = 322,463.70 × 81,811.80 - Step 4: Simplify right side
214,975.80x = 26,381,335,731.66 - Step 5: Solve for x
x = 26,381,335,731.66/214,975.80 - Step 6: Final answer
x = 122,717.70
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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.