Finding the Fourth Proportional to 378,720.95, 522,634.62 and 208,955.07
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Solution
The fourth proportional to 378,720.95, 522,634.62 and 208,955.07 is: 288,357.84
Step by Step Solution
- Step 1: Write the proportion equation
378,720.95 : 522,634.62 = 208,955.07 : x - Step 2: Convert to fraction form
378,720.95/522,634.62 = 208,955.07/x - Step 3: Cross multiply
378,720.95x = 522,634.62 × 208,955.07 - Step 4: Simplify right side
378,720.95x = 109,207,153,606.52 - Step 5: Solve for x
x = 109,207,153,606.52/378,720.95 - Step 6: Final answer
x = 288,357.84
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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.