Finding the Fourth Proportional to 286,006.87, 394,713.99 and 156,970.28
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Solution
The fourth proportional to 286,006.87, 394,713.99 and 156,970.28 is: 216,632.44
Step by Step Solution
- Step 1: Write the proportion equation
286,006.87 : 394,713.99 = 156,970.28 : x - Step 2: Convert to fraction form
286,006.87/394,713.99 = 156,970.28/x - Step 3: Cross multiply
286,006.87x = 394,713.99 × 156,970.28 - Step 4: Simplify right side
286,006.87x = 61,958,365,530.22 - Step 5: Solve for x
x = 61,958,365,530.22/286,006.87 - Step 6: Final answer
x = 216,632.44
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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.