Finding the Fourth Proportional to 258,470.23, 387,705.57 and 80,991.08
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Solution
The fourth proportional to 258,470.23, 387,705.57 and 80,991.08 is: 121,486.69
Step by Step Solution
- Step 1: Write the proportion equation
258,470.23 : 387,705.57 = 80,991.08 : x - Step 2: Convert to fraction form
258,470.23/387,705.57 = 80,991.08/x - Step 3: Cross multiply
258,470.23x = 387,705.57 × 80,991.08 - Step 4: Simplify right side
258,470.23x = 31,400,692,836.32 - Step 5: Solve for x
x = 31,400,692,836.32/258,470.23 - Step 6: Final answer
x = 121,486.69
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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.