Finding the Fourth Proportional to 399,138.18, 598,713.75 and 132,894.42
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Solution
The fourth proportional to 399,138.18, 598,713.75 and 132,894.42 is: 199,343.79
Step by Step Solution
- Step 1: Write the proportion equation
399,138.18 : 598,713.75 = 132,894.42 : x - Step 2: Convert to fraction form
399,138.18/598,713.75 = 132,894.42/x - Step 3: Cross multiply
399,138.18x = 598,713.75 × 132,894.42 - Step 4: Simplify right side
399,138.18x = 79,565,716,552.28 - Step 5: Solve for x
x = 79,565,716,552.28/399,138.18 - Step 6: Final answer
x = 199,343.79
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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.