Finding the Fourth Proportional to 247,117.14, 340,985.97 and 138,220.92
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Solution
The fourth proportional to 247,117.14, 340,985.97 and 138,220.92 is: 190,724.91
Step by Step Solution
- Step 1: Write the proportion equation
247,117.14 : 340,985.97 = 138,220.92 : x - Step 2: Convert to fraction form
247,117.14/340,985.97 = 138,220.92/x - Step 3: Cross multiply
247,117.14x = 340,985.97 × 138,220.92 - Step 4: Simplify right side
247,117.14x = 47,131,394,480.49 - Step 5: Solve for x
x = 47,131,394,480.49/247,117.14 - Step 6: Final answer
x = 190,724.91
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1.5x scale
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.