Finding the Fourth Proportional to 216,922.86, 299,359.80 and 121,428.99
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Solution
The fourth proportional to 216,922.86, 299,359.80 and 121,428.99 is: 167,575.51
Step by Step Solution
- Step 1: Write the proportion equation
216,922.86 : 299,359.80 = 121,428.99 : x - Step 2: Convert to fraction form
216,922.86/299,359.80 = 121,428.99/x - Step 3: Cross multiply
216,922.86x = 299,359.80 × 121,428.99 - Step 4: Simplify right side
216,922.86x = 36,350,958,160.60 - Step 5: Solve for x
x = 36,350,958,160.60/216,922.86 - Step 6: Final answer
x = 167,575.51
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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.