Finding the Fourth Proportional to 280,335.66, 420,689.21 and 154,064.09
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Solution
The fourth proportional to 280,335.66, 420,689.21 and 154,064.09 is: 231,198.20
Step by Step Solution
- Step 1: Write the proportion equation
280,335.66 : 420,689.21 = 154,064.09 : x - Step 2: Convert to fraction form
280,335.66/420,689.21 = 154,064.09/x - Step 3: Cross multiply
280,335.66x = 420,689.21 × 154,064.09 - Step 4: Simplify right side
280,335.66x = 64,813,098,593.18 - Step 5: Solve for x
x = 64,813,098,593.18/280,335.66 - Step 6: Final answer
x = 231,198.20
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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.