Finding the Fourth Proportional to 257,696.16, 386,655.52 and 139,450.96
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Solution
The fourth proportional to 257,696.16, 386,655.52 and 139,450.96 is: 209,236.66
Step by Step Solution
- Step 1: Write the proportion equation
257,696.16 : 386,655.52 = 139,450.96 : x - Step 2: Convert to fraction form
257,696.16/386,655.52 = 139,450.96/x - Step 3: Cross multiply
257,696.16x = 386,655.52 × 139,450.96 - Step 4: Simplify right side
257,696.16x = 53,919,483,453.30 - Step 5: Solve for x
x = 53,919,483,453.30/257,696.16 - Step 6: Final answer
x = 209,236.66
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.