Finding the Fourth Proportional to 257,934.84, 386,668.70 and 91,683.96
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Solution
The fourth proportional to 257,934.84, 386,668.70 and 91,683.96 is: 137,442.92
Step by Step Solution
- Step 1: Write the proportion equation
257,934.84 : 386,668.70 = 91,683.96 : x - Step 2: Convert to fraction form
257,934.84/386,668.70 = 91,683.96/x - Step 3: Cross multiply
257,934.84x = 386,668.70 × 91,683.96 - Step 4: Simplify right side
257,934.84x = 35,451,317,624.05 - Step 5: Solve for x
x = 35,451,317,624.05/257,934.84 - Step 6: Final answer
x = 137,442.92
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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.