Finding the Fourth Proportional to 378,322.79, 522,089.01 and 208,562.99
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Solution
The fourth proportional to 378,322.79, 522,089.01 and 208,562.99 is: 287,818.89
Step by Step Solution
- Step 1: Write the proportion equation
378,322.79 : 522,089.01 = 208,562.99 : x - Step 2: Convert to fraction form
378,322.79/522,089.01 = 208,562.99/x - Step 3: Cross multiply
378,322.79x = 522,089.01 × 208,562.99 - Step 4: Simplify right side
378,322.79x = 108,888,442,361.30 - Step 5: Solve for x
x = 108,888,442,361.30/378,322.79 - Step 6: Final answer
x = 287,818.89
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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.