Finding the Fourth Proportional to 312,581.44, 431,359.99 and 169,340.46
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Solution
The fourth proportional to 312,581.44, 431,359.99 and 169,340.46 is: 233,688.54
Step by Step Solution
- Step 1: Write the proportion equation
312,581.44 : 431,359.99 = 169,340.46 : x - Step 2: Convert to fraction form
312,581.44/431,359.99 = 169,340.46/x - Step 3: Cross multiply
312,581.44x = 431,359.99 × 169,340.46 - Step 4: Simplify right side
312,581.44x = 73,046,699,132.20 - Step 5: Solve for x
x = 73,046,699,132.20/312,581.44 - Step 6: Final answer
x = 233,688.54
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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.