Finding the Fourth Proportional to 285,540.36, 394,037.15 and 156,477.30
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Solution
The fourth proportional to 285,540.36, 394,037.15 and 156,477.30 is: 215,933.99
Step by Step Solution
- Step 1: Write the proportion equation
285,540.36 : 394,037.15 = 156,477.30 : x - Step 2: Convert to fraction form
285,540.36/394,037.15 = 156,477.30/x - Step 3: Cross multiply
285,540.36x = 394,037.15 × 156,477.30 - Step 4: Simplify right side
285,540.36x = 61,657,868,549.31 - Step 5: Solve for x
x = 61,657,868,549.31/285,540.36 - Step 6: Final answer
x = 215,933.99
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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.