Finding the Fourth Proportional to 257,455.80, 386,183.70 and 218,575.80
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Solution
The fourth proportional to 257,455.80, 386,183.70 and 218,575.80 is: 327,863.70
Step by Step Solution
- Step 1: Write the proportion equation
257,455.80 : 386,183.70 = 218,575.80 : x - Step 2: Convert to fraction form
257,455.80/386,183.70 = 218,575.80/x - Step 3: Cross multiply
257,455.80x = 386,183.70 × 218,575.80 - Step 4: Simplify right side
257,455.80x = 84,410,411,174.46 - Step 5: Solve for x
x = 84,410,411,174.46/257,455.80 - Step 6: Final answer
x = 327,863.70
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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.