Finding the Fourth Proportional to 216,434.25, 298,678.34 and 120,940.94
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Solution
The fourth proportional to 216,434.25, 298,678.34 and 120,940.94 is: 166,897.99
Step by Step Solution
- Step 1: Write the proportion equation
216,434.25 : 298,678.34 = 120,940.94 : x - Step 2: Convert to fraction form
216,434.25/298,678.34 = 120,940.94/x - Step 3: Cross multiply
216,434.25x = 298,678.34 × 120,940.94 - Step 4: Simplify right side
216,434.25x = 36,122,440,246.29 - Step 5: Solve for x
x = 36,122,440,246.29/216,434.25 - Step 6: Final answer
x = 166,897.99
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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.