Finding the Fourth Proportional to 217,980.70, 326,728.05 and 84,816.70
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Solution
The fourth proportional to 217,980.70, 326,728.05 and 84,816.70 is: 127,130.50
Step by Step Solution
- Step 1: Write the proportion equation
217,980.70 : 326,728.05 = 84,816.70 : x - Step 2: Convert to fraction form
217,980.70/326,728.05 = 84,816.70/x - Step 3: Cross multiply
217,980.70x = 326,728.05 × 84,816.70 - Step 4: Simplify right side
217,980.70x = 27,711,994,998.44 - Step 5: Solve for x
x = 27,711,994,998.44/217,980.70 - Step 6: Final answer
x = 127,130.50
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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.