Finding the Fourth Proportional to 397,639.70, 548,726.36 and 216,352.35
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Solution
The fourth proportional to 397,639.70, 548,726.36 and 216,352.35 is: 298,557.31
Step by Step Solution
- Step 1: Write the proportion equation
397,639.70 : 548,726.36 = 216,352.35 : x - Step 2: Convert to fraction form
397,639.70/548,726.36 = 216,352.35/x - Step 3: Cross multiply
397,639.70x = 548,726.36 × 216,352.35 - Step 4: Simplify right side
397,639.70x = 118,718,236,411.18 - Step 5: Solve for x
x = 118,718,236,411.18/397,639.70 - Step 6: Final answer
x = 298,557.31
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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.