Finding the Fourth Proportional to 287,221.84, 396,362.81 and 158,157.63
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Solution
The fourth proportional to 287,221.84, 396,362.81 and 158,157.63 is: 218,255.70
Step by Step Solution
- Step 1: Write the proportion equation
287,221.84 : 396,362.81 = 158,157.63 : x - Step 2: Convert to fraction form
287,221.84/396,362.81 = 158,157.63/x - Step 3: Cross multiply
287,221.84x = 396,362.81 × 158,157.63 - Step 4: Simplify right side
287,221.84x = 62,687,802,649.74 - Step 5: Solve for x
x = 62,687,802,649.74/287,221.84 - Step 6: Final answer
x = 218,255.70
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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.