Finding the Fourth Proportional to 279,129.11, 385,206.23 and 171,761.99
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Solution
The fourth proportional to 279,129.11, 385,206.23 and 171,761.99 is: 237,036.50
Step by Step Solution
- Step 1: Write the proportion equation
279,129.11 : 385,206.23 = 171,761.99 : x - Step 2: Convert to fraction form
279,129.11/385,206.23 = 171,761.99/x - Step 3: Cross multiply
279,129.11x = 385,206.23 × 171,761.99 - Step 4: Simplify right side
279,129.11x = 66,163,787,128.57 - Step 5: Solve for x
x = 66,163,787,128.57/279,129.11 - Step 6: Final answer
x = 237,036.50
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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.