Finding the Fourth Proportional to 215,358.81, 297,456.33 and 157,915.23
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Solution
The fourth proportional to 215,358.81, 297,456.33 and 157,915.23 is: 218,114.53
Step by Step Solution
- Step 1: Write the proportion equation
215,358.81 : 297,456.33 = 157,915.23 : x - Step 2: Convert to fraction form
215,358.81/297,456.33 = 157,915.23/x - Step 3: Cross multiply
215,358.81x = 297,456.33 × 157,915.23 - Step 4: Simplify right side
215,358.81x = 46,972,884,766.91 - Step 5: Solve for x
x = 46,972,884,766.91/215,358.81 - Step 6: Final answer
x = 218,114.53
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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.