Finding the Fourth Proportional to 397,090.85, 547,990.58 and 215,805.67
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Solution
The fourth proportional to 397,090.85, 547,990.58 and 215,805.67 is: 297,814.66
Step by Step Solution
- Step 1: Write the proportion equation
397,090.85 : 547,990.58 = 215,805.67 : x - Step 2: Convert to fraction form
397,090.85/547,990.58 = 215,805.67/x - Step 3: Cross multiply
397,090.85x = 547,990.58 × 215,805.67 - Step 4: Simplify right side
397,090.85x = 118,259,473,440.13 - Step 5: Solve for x
x = 118,259,473,440.13/397,090.85 - Step 6: Final answer
x = 297,814.66
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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.