Finding the Fourth Proportional to 311,958.56, 430,502.79 and 168,718.59
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Solution
The fourth proportional to 311,958.56, 430,502.79 and 168,718.59 is: 232,831.65
Step by Step Solution
- Step 1: Write the proportion equation
311,958.56 : 430,502.79 = 168,718.59 : x - Step 2: Convert to fraction form
311,958.56/430,502.79 = 168,718.59/x - Step 3: Cross multiply
311,958.56x = 430,502.79 × 168,718.59 - Step 4: Simplify right side
311,958.56x = 72,633,823,719.87 - Step 5: Solve for x
x = 72,633,823,719.87/311,958.56 - Step 6: Final answer
x = 232,831.65
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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.