Finding the Fourth Proportional to 312,806.49, 431,666.06 and 169,562.85
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Solution
The fourth proportional to 312,806.49, 431,666.06 and 169,562.85 is: 233,992.99
Step by Step Solution
- Step 1: Write the proportion equation
312,806.49 : 431,666.06 = 169,562.85 : x - Step 2: Convert to fraction form
312,806.49/431,666.06 = 169,562.85/x - Step 3: Cross multiply
312,806.49x = 431,666.06 × 169,562.85 - Step 4: Simplify right side
312,806.49x = 73,194,526,534.06 - Step 5: Solve for x
x = 73,194,526,534.06/312,806.49 - Step 6: Final answer
x = 233,992.99
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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.