Finding the Fourth Proportional to 381,642.14, 572,529.10 and 128,924.44
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Solution
The fourth proportional to 381,642.14, 572,529.10 and 128,924.44 is: 193,408.92
Step by Step Solution
- Step 1: Write the proportion equation
381,642.14 : 572,529.10 = 128,924.44 : x - Step 2: Convert to fraction form
381,642.14/572,529.10 = 128,924.44/x - Step 3: Cross multiply
381,642.14x = 572,529.10 × 128,924.44 - Step 4: Simplify right side
381,642.14x = 73,812,993,601.20 - Step 5: Solve for x
x = 73,812,993,601.20/381,642.14 - Step 6: Final answer
x = 193,408.92
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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.