Finding the Fourth Proportional to 317,928.13, 438,440.20 and 208,839.99
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Solution
The fourth proportional to 317,928.13, 438,440.20 and 208,839.99 is: 288,001.72
Step by Step Solution
- Step 1: Write the proportion equation
317,928.13 : 438,440.20 = 208,839.99 : x - Step 2: Convert to fraction form
317,928.13/438,440.20 = 208,839.99/x - Step 3: Cross multiply
317,928.13x = 438,440.20 × 208,839.99 - Step 4: Simplify right side
317,928.13x = 91,563,846,983.60 - Step 5: Solve for x
x = 91,563,846,983.60/317,928.13 - Step 6: Final answer
x = 288,001.72
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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.