Finding the Fourth Proportional to 230,901.21, 318,696.80 and 135,438.66
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Solution
The fourth proportional to 230,901.21, 318,696.80 and 135,438.66 is: 186,936.51
Step by Step Solution
- Step 1: Write the proportion equation
230,901.21 : 318,696.80 = 135,438.66 : x - Step 2: Convert to fraction form
230,901.21/318,696.80 = 135,438.66/x - Step 3: Cross multiply
230,901.21x = 318,696.80 × 135,438.66 - Step 4: Simplify right side
230,901.21x = 43,163,866,861.09 - Step 5: Solve for x
x = 43,163,866,861.09/230,901.21 - Step 6: Final answer
x = 186,936.51
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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.