Finding the Fourth Proportional to 221,920.02, 306,249.63 and 121,318.02
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Solution
The fourth proportional to 221,920.02, 306,249.63 and 121,318.02 is: 167,418.87
Step by Step Solution
- Step 1: Write the proportion equation
221,920.02 : 306,249.63 = 121,318.02 : x - Step 2: Convert to fraction form
221,920.02/306,249.63 = 121,318.02/x - Step 3: Cross multiply
221,920.02x = 306,249.63 × 121,318.02 - Step 4: Simplify right side
221,920.02x = 37,153,598,737.33 - Step 5: Solve for x
x = 37,153,598,737.33/221,920.02 - Step 6: Final answer
x = 167,418.87
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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.