Finding the Fourth Proportional to 258,357.80, 387,583.18 and 106,470.32
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Solution
The fourth proportional to 258,357.80, 387,583.18 and 106,470.32 is: 159,724.62
Step by Step Solution
- Step 1: Write the proportion equation
258,357.80 : 387,583.18 = 106,470.32 : x - Step 2: Convert to fraction form
258,357.80/387,583.18 = 106,470.32/x - Step 3: Cross multiply
258,357.80x = 387,583.18 × 106,470.32 - Step 4: Simplify right side
258,357.80x = 41,266,102,997.13 - Step 5: Solve for x
x = 41,266,102,997.13/258,357.80 - Step 6: Final answer
x = 159,724.62
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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.