Finding the Fourth Proportional to 396,876.80, 547,699.84 and 215,588.66
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Solution
The fourth proportional to 396,876.80, 547,699.84 and 215,588.66 is: 297,517.70
Step by Step Solution
- Step 1: Write the proportion equation
396,876.80 : 547,699.84 = 215,588.66 : x - Step 2: Convert to fraction form
396,876.80/547,699.84 = 215,588.66/x - Step 3: Cross multiply
396,876.80x = 547,699.84 × 215,588.66 - Step 4: Simplify right side
396,876.80x = 118,077,874,587.81 - Step 5: Solve for x
x = 118,077,874,587.81/396,876.80 - Step 6: Final answer
x = 297,517.70
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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.