Finding the Fourth Proportional to 257,816.30, 386,734.92 and 122,810.96
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Solution
The fourth proportional to 257,816.30, 386,734.92 and 122,810.96 is: 184,221.43
Step by Step Solution
- Step 1: Write the proportion equation
257,816.30 : 386,734.92 = 122,810.96 : x - Step 2: Convert to fraction form
257,816.30/386,734.92 = 122,810.96/x - Step 3: Cross multiply
257,816.30x = 386,734.92 × 122,810.96 - Step 4: Simplify right side
257,816.30x = 47,495,287,757.56 - Step 5: Solve for x
x = 47,495,287,757.56/257,816.30 - Step 6: Final answer
x = 184,221.43
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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.