Finding the Fourth Proportional to 378,449.28, 522,221.76 and 208,679.04
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Solution
The fourth proportional to 378,449.28, 522,221.76 and 208,679.04 is: 287,955.99
Step by Step Solution
- Step 1: Write the proportion equation
378,449.28 : 522,221.76 = 208,679.04 : x - Step 2: Convert to fraction form
378,449.28/522,221.76 = 208,679.04/x - Step 3: Cross multiply
378,449.28x = 522,221.76 × 208,679.04 - Step 4: Simplify right side
378,449.28x = 108,976,735,543.91 - Step 5: Solve for x
x = 108,976,735,543.91/378,449.28 - Step 6: Final answer
x = 287,955.99
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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.