Finding the Fourth Proportional to 391,147.28, 586,920.99 and 186,213.52
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Solution
The fourth proportional to 391,147.28, 586,920.99 and 186,213.52 is: 279,415.52
Step by Step Solution
- Step 1: Write the proportion equation
391,147.28 : 586,920.99 = 186,213.52 : x - Step 2: Convert to fraction form
391,147.28/586,920.99 = 186,213.52/x - Step 3: Cross multiply
391,147.28x = 586,920.99 × 186,213.52 - Step 4: Simplify right side
391,147.28x = 109,292,621,040.71 - Step 5: Solve for x
x = 109,292,621,040.71/391,147.28 - Step 6: Final answer
x = 279,415.52
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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.