Finding the Fourth Proportional to 405,198.40, 559,209.28 and 268,991.68
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Solution
The fourth proportional to 405,198.40, 559,209.28 and 268,991.68 is: 371,232.08
Step by Step Solution
- Step 1: Write the proportion equation
405,198.40 : 559,209.28 = 268,991.68 : x - Step 2: Convert to fraction form
405,198.40/559,209.28 = 268,991.68/x - Step 3: Cross multiply
405,198.40x = 559,209.28 × 268,991.68 - Step 4: Simplify right side
405,198.40x = 150,422,643,698.79 - Step 5: Solve for x
x = 150,422,643,698.79/405,198.40 - Step 6: Final answer
x = 371,232.08
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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.