Finding the Fourth Proportional to 397,790.22, 548,963.98 and 216,508.74
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Solution
The fourth proportional to 397,790.22, 548,963.98 and 216,508.74 is: 298,789.39
Step by Step Solution
- Step 1: Write the proportion equation
397,790.22 : 548,963.98 = 216,508.74 : x - Step 2: Convert to fraction form
397,790.22/548,963.98 = 216,508.74/x - Step 3: Cross multiply
397,790.22x = 548,963.98 × 216,508.74 - Step 4: Simplify right side
397,790.22x = 118,855,499,073.91 - Step 5: Solve for x
x = 118,855,499,073.91/397,790.22 - Step 6: Final answer
x = 298,789.39
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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.