Finding the Fourth Proportional to 421,091.53, 631,736.45 and 136,781.19
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Solution
The fourth proportional to 421,091.53, 631,736.45 and 136,781.19 is: 205,203.99
Step by Step Solution
- Step 1: Write the proportion equation
421,091.53 : 631,736.45 = 136,781.19 : x - Step 2: Convert to fraction form
421,091.53/631,736.45 = 136,781.19/x - Step 3: Cross multiply
421,091.53x = 631,736.45 × 136,781.19 - Step 4: Simplify right side
421,091.53x = 86,409,663,397.38 - Step 5: Solve for x
x = 86,409,663,397.38/421,091.53 - Step 6: Final answer
x = 205,203.99
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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.