Finding the Fourth Proportional to 208,842.31, 288,202.60 and 113,349.05
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Solution
The fourth proportional to 208,842.31, 288,202.60 and 113,349.05 is: 156,421.80
Step by Step Solution
- Step 1: Write the proportion equation
208,842.31 : 288,202.60 = 113,349.05 : x - Step 2: Convert to fraction form
208,842.31/288,202.60 = 113,349.05/x - Step 3: Cross multiply
208,842.31x = 288,202.60 × 113,349.05 - Step 4: Simplify right side
208,842.31x = 32,667,490,917.53 - Step 5: Solve for x
x = 32,667,490,917.53/208,842.31 - Step 6: Final answer
x = 156,421.80
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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.