Finding the Fourth Proportional to 290,781.06, 436,171.05 and 91,116.75
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Solution
The fourth proportional to 290,781.06, 436,171.05 and 91,116.75 is: 136,674.96
Step by Step Solution
- Step 1: Write the proportion equation
290,781.06 : 436,171.05 = 91,116.75 : x - Step 2: Convert to fraction form
290,781.06/436,171.05 = 91,116.75/x - Step 3: Cross multiply
290,781.06x = 436,171.05 × 91,116.75 - Step 4: Simplify right side
290,781.06x = 39,742,488,520.09 - Step 5: Solve for x
x = 39,742,488,520.09/290,781.06 - Step 6: Final answer
x = 136,674.96
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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.