Finding the Fourth Proportional to 257,197.23, 385,654.91 and 79,654.95
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Solution
The fourth proportional to 257,197.23, 385,654.91 and 79,654.95 is: 119,438.78
Step by Step Solution
- Step 1: Write the proportion equation
257,197.23 : 385,654.91 = 79,654.95 : x - Step 2: Convert to fraction form
257,197.23/385,654.91 = 79,654.95/x - Step 3: Cross multiply
257,197.23x = 385,654.91 × 79,654.95 - Step 4: Simplify right side
257,197.23x = 30,719,322,175.03 - Step 5: Solve for x
x = 30,719,322,175.03/257,197.23 - Step 6: Final answer
x = 119,438.78
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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.