Finding the Fourth Proportional to 426,208.97, 639,290.07 and 257,684.06
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Solution
The fourth proportional to 426,208.97, 639,290.07 and 257,684.06 is: 386,511.95
Step by Step Solution
- Step 1: Write the proportion equation
426,208.97 : 639,290.07 = 257,684.06 : x - Step 2: Convert to fraction form
426,208.97/639,290.07 = 257,684.06/x - Step 3: Cross multiply
426,208.97x = 639,290.07 × 257,684.06 - Step 4: Simplify right side
426,208.97x = 164,734,857,558.83 - Step 5: Solve for x
x = 164,734,857,558.83/426,208.97 - Step 6: Final answer
x = 386,511.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.