Finding the Fourth Proportional to 390,537.45, 585,806.18 and 141,161.13
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Solution
The fourth proportional to 390,537.45, 585,806.18 and 141,161.13 is: 211,741.70
Step by Step Solution
- Step 1: Write the proportion equation
390,537.45 : 585,806.18 = 141,161.13 : x - Step 2: Convert to fraction form
390,537.45/585,806.18 = 141,161.13/x - Step 3: Cross multiply
390,537.45x = 585,806.18 × 141,161.13 - Step 4: Simplify right side
390,537.45x = 82,693,061,623.98 - Step 5: Solve for x
x = 82,693,061,623.98/390,537.45 - Step 6: Final answer
x = 211,741.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.