Finding the Fourth Proportional to 279,882.81, 385,932.99 and 189,081.09
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Solution
The fourth proportional to 279,882.81, 385,932.99 and 189,081.09 is: 260,725.66
Step by Step Solution
- Step 1: Write the proportion equation
279,882.81 : 385,932.99 = 189,081.09 : x - Step 2: Convert to fraction form
279,882.81/385,932.99 = 189,081.09/x - Step 3: Cross multiply
279,882.81x = 385,932.99 × 189,081.09 - Step 4: Simplify right side
279,882.81x = 72,972,630,416.16 - Step 5: Solve for x
x = 72,972,630,416.16/279,882.81 - Step 6: Final answer
x = 260,725.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.