Finding the Fourth Proportional to 211,381.29, 291,706.11 and 115,885.94
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Solution
The fourth proportional to 211,381.29, 291,706.11 and 115,885.94 is: 159,922.55
Step by Step Solution
- Step 1: Write the proportion equation
211,381.29 : 291,706.11 = 115,885.94 : x - Step 2: Convert to fraction form
211,381.29/291,706.11 = 115,885.94/x - Step 3: Cross multiply
211,381.29x = 291,706.11 × 115,885.94 - Step 4: Simplify right side
211,381.29x = 33,804,635,302.56 - Step 5: Solve for x
x = 33,804,635,302.56/211,381.29 - Step 6: Final answer
x = 159,922.55
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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.