Finding the Fourth Proportional to 315,086.58, 434,814.18 and 171,838.08
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Solution
The fourth proportional to 315,086.58, 434,814.18 and 171,838.08 is: 237,133.66
Step by Step Solution
- Step 1: Write the proportion equation
315,086.58 : 434,814.18 = 171,838.08 : x - Step 2: Convert to fraction form
315,086.58/434,814.18 = 171,838.08/x - Step 3: Cross multiply
315,086.58x = 434,814.18 × 171,838.08 - Step 4: Simplify right side
315,086.58x = 74,717,633,847.97 - Step 5: Solve for x
x = 74,717,633,847.97/315,086.58 - Step 6: Final answer
x = 237,133.66
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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.