Finding the Fourth Proportional to 274,282.29, 378,743.18 and 172,478.12
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Solution
The fourth proportional to 274,282.29, 378,743.18 and 172,478.12 is: 238,166.70
Step by Step Solution
- Step 1: Write the proportion equation
274,282.29 : 378,743.18 = 172,478.12 : x - Step 2: Convert to fraction form
274,282.29/378,743.18 = 172,478.12/x - Step 3: Cross multiply
274,282.29x = 378,743.18 × 172,478.12 - Step 4: Simplify right side
274,282.29x = 65,324,908,893.12 - Step 5: Solve for x
x = 65,324,908,893.12/274,282.29 - Step 6: Final answer
x = 238,166.70
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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.