Finding the Fourth Proportional to 378,739.74, 522,660.48 and 208,973.88
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Solution
The fourth proportional to 378,739.74, 522,660.48 and 208,973.88 is: 288,383.76
Step by Step Solution
- Step 1: Write the proportion equation
378,739.74 : 522,660.48 = 208,973.88 : x - Step 2: Convert to fraction form
378,739.74/522,660.48 = 208,973.88/x - Step 3: Cross multiply
378,739.74x = 522,660.48 × 208,973.88 - Step 4: Simplify right side
378,739.74x = 109,222,388,428.26 - Step 5: Solve for x
x = 109,222,388,428.26/378,739.74 - Step 6: Final answer
x = 288,383.76
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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.