Finding the Fourth Proportional to 207,239.20, 310,902.96 and 66,992.80
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Solution
The fourth proportional to 207,239.20, 310,902.96 and 66,992.80 is: 100,503.48
Step by Step Solution
- Step 1: Write the proportion equation
207,239.20 : 310,902.96 = 66,992.80 : x - Step 2: Convert to fraction form
207,239.20/310,902.96 = 66,992.80/x - Step 3: Cross multiply
207,239.20x = 310,902.96 × 66,992.80 - Step 4: Simplify right side
207,239.20x = 20,828,259,818.69 - Step 5: Solve for x
x = 20,828,259,818.69/207,239.20 - Step 6: Final answer
x = 100,503.48
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1.5x scale
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.