Finding the Fourth Proportional to 230,885.67, 318,619.11 and 128,912.70
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Solution
The fourth proportional to 230,885.67, 318,619.11 and 128,912.70 is: 177,897.79
Step by Step Solution
- Step 1: Write the proportion equation
230,885.67 : 318,619.11 = 128,912.70 : x - Step 2: Convert to fraction form
230,885.67/318,619.11 = 128,912.70/x - Step 3: Cross multiply
230,885.67x = 318,619.11 × 128,912.70 - Step 4: Simplify right side
230,885.67x = 41,074,049,741.70 - Step 5: Solve for x
x = 41,074,049,741.70/230,885.67 - Step 6: Final answer
x = 177,897.79
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1.5x scale
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.