Finding the Fourth Proportional to 214,471.80, 321,707.70 and 81,307.80
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Solution
The fourth proportional to 214,471.80, 321,707.70 and 81,307.80 is: 121,961.70
Step by Step Solution
- Step 1: Write the proportion equation
214,471.80 : 321,707.70 = 81,307.80 : x - Step 2: Convert to fraction form
214,471.80/321,707.70 = 81,307.80/x - Step 3: Cross multiply
214,471.80x = 321,707.70 × 81,307.80 - Step 4: Simplify right side
214,471.80x = 26,157,345,330.06 - Step 5: Solve for x
x = 26,157,345,330.06/214,471.80 - Step 6: Final answer
x = 121,961.70
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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.