Finding the Fourth Proportional to 208,559.70, 312,839.55 and 129,827.70
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Solution
The fourth proportional to 208,559.70, 312,839.55 and 129,827.70 is: 194,741.55
Step by Step Solution
- Step 1: Write the proportion equation
208,559.70 : 312,839.55 = 129,827.70 : x - Step 2: Convert to fraction form
208,559.70/312,839.55 = 129,827.70/x - Step 3: Cross multiply
208,559.70x = 312,839.55 × 129,827.70 - Step 4: Simplify right side
208,559.70x = 40,615,239,245.54 - Step 5: Solve for x
x = 40,615,239,245.54/208,559.70 - Step 6: Final answer
x = 194,741.55
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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.