Finding the Fourth Proportional to 317,471.28, 438,130.08 and 209,854.68
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Solution
The fourth proportional to 317,471.28, 438,130.08 and 209,854.68 is: 289,612.49
Step by Step Solution
- Step 1: Write the proportion equation
317,471.28 : 438,130.08 = 209,854.68 : x - Step 2: Convert to fraction form
317,471.28/438,130.08 = 209,854.68/x - Step 3: Cross multiply
317,471.28x = 438,130.08 × 209,854.68 - Step 4: Simplify right side
317,471.28x = 91,943,647,736.77 - Step 5: Solve for x
x = 91,943,647,736.77/317,471.28 - Step 6: Final answer
x = 289,612.49
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.