Finding the Fourth Proportional to 396,948.75, 547,823.84 and 218,135.31
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Solution
The fourth proportional to 396,948.75, 547,823.84 and 218,135.31 is: 301,045.72
Step by Step Solution
- Step 1: Write the proportion equation
396,948.75 : 547,823.84 = 218,135.31 : x - Step 2: Convert to fraction form
396,948.75/547,823.84 = 218,135.31/x - Step 3: Cross multiply
396,948.75x = 547,823.84 × 218,135.31 - Step 4: Simplify right side
396,948.75x = 119,499,722,073.11 - Step 5: Solve for x
x = 119,499,722,073.11/396,948.75 - Step 6: Final answer
x = 301,045.72
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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.