Finding the Fourth Proportional to 397,680.16, 548,790.48 and 216,395.68
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Solution
The fourth proportional to 397,680.16, 548,790.48 and 216,395.68 is: 298,621.61
Step by Step Solution
- Step 1: Write the proportion equation
397,680.16 : 548,790.48 = 216,395.68 : x - Step 2: Convert to fraction form
397,680.16/548,790.48 = 216,395.68/x - Step 3: Cross multiply
397,680.16x = 548,790.48 × 216,395.68 - Step 4: Simplify right side
397,680.16x = 118,755,889,097.13 - Step 5: Solve for x
x = 118,755,889,097.13/397,680.16 - Step 6: Final answer
x = 298,621.61
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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.