Finding the Fourth Proportional to 257,212.98, 385,678.53 and 79,670.70
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Solution
The fourth proportional to 257,212.98, 385,678.53 and 79,670.70 is: 119,462.39
Step by Step Solution
- Step 1: Write the proportion equation
257,212.98 : 385,678.53 = 79,670.70 : x - Step 2: Convert to fraction form
257,212.98/385,678.53 = 79,670.70/x - Step 3: Cross multiply
257,212.98x = 385,678.53 × 79,670.70 - Step 4: Simplify right side
257,212.98x = 30,727,278,460.07 - Step 5: Solve for x
x = 30,727,278,460.07/257,212.98 - Step 6: Final answer
x = 119,462.39
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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.