Finding the Fourth Proportional to 290,815.96, 436,224.12 and 91,151.92
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Solution
The fourth proportional to 290,815.96, 436,224.12 and 91,151.92 is: 136,727.94
Step by Step Solution
- Step 1: Write the proportion equation
290,815.96 : 436,224.12 = 91,151.92 : x - Step 2: Convert to fraction form
290,815.96/436,224.12 = 91,151.92/x - Step 3: Cross multiply
290,815.96x = 436,224.12 × 91,151.92 - Step 4: Simplify right side
290,815.96x = 39,762,666,088.31 - Step 5: Solve for x
x = 39,762,666,088.31/290,815.96 - Step 6: Final answer
x = 136,727.94
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1.5x scale
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.