Finding the Fourth Proportional to 218,316.72, 301,277.02 and 121,518.49
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Solution
The fourth proportional to 218,316.72, 301,277.02 and 121,518.49 is: 167,695.49
Step by Step Solution
- Step 1: Write the proportion equation
218,316.72 : 301,277.02 = 121,518.49 : x - Step 2: Convert to fraction form
218,316.72/301,277.02 = 121,518.49/x - Step 3: Cross multiply
218,316.72x = 301,277.02 × 121,518.49 - Step 4: Simplify right side
218,316.72x = 36,610,728,542.10 - Step 5: Solve for x
x = 36,610,728,542.10/218,316.72 - Step 6: Final answer
x = 167,695.49
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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.