Finding the Fourth Proportional to 381,646.78, 526,682.06 and 209,581.72
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Solution
The fourth proportional to 381,646.78, 526,682.06 and 209,581.72 is: 289,227.99
Step by Step Solution
- Step 1: Write the proportion equation
381,646.78 : 526,682.06 = 209,581.72 : x - Step 2: Convert to fraction form
381,646.78/526,682.06 = 209,581.72/x - Step 3: Cross multiply
381,646.78x = 526,682.06 × 209,581.72 - Step 4: Simplify right side
381,646.78x = 110,382,932,027.94 - Step 5: Solve for x
x = 110,382,932,027.94/381,646.78 - Step 6: Final answer
x = 289,227.99
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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.