Finding the Fourth Proportional to 398,910.18, 550,509.92 and 217,632.08
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Solution
The fourth proportional to 398,910.18, 550,509.92 and 217,632.08 is: 300,339.84
Step by Step Solution
- Step 1: Write the proportion equation
398,910.18 : 550,509.92 = 217,632.08 : x - Step 2: Convert to fraction form
398,910.18/550,509.92 = 217,632.08/x - Step 3: Cross multiply
398,910.18x = 550,509.92 × 217,632.08 - Step 4: Simplify right side
398,910.18x = 119,808,620,054.47 - Step 5: Solve for x
x = 119,808,620,054.47/398,910.18 - Step 6: Final answer
x = 300,339.84
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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.