Finding the Fourth Proportional to 389,865.75, 538,014.87 and 220,110.81
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Solution
The fourth proportional to 389,865.75, 538,014.87 and 220,110.81 is: 303,752.99
Step by Step Solution
- Step 1: Write the proportion equation
389,865.75 : 538,014.87 = 220,110.81 : x - Step 2: Convert to fraction form
389,865.75/538,014.87 = 220,110.81/x - Step 3: Cross multiply
389,865.75x = 538,014.87 × 220,110.81 - Step 4: Simplify right side
389,865.75x = 118,422,888,827.75 - Step 5: Solve for x
x = 118,422,888,827.75/389,865.75 - Step 6: Final answer
x = 303,752.99
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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.