Finding the Fourth Proportional to 317,562.71, 438,164.18 and 188,434.49
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Solution
The fourth proportional to 317,562.71, 438,164.18 and 188,434.49 is: 259,996.65
Step by Step Solution
- Step 1: Write the proportion equation
317,562.71 : 438,164.18 = 188,434.49 : x - Step 2: Convert to fraction form
317,562.71/438,164.18 = 188,434.49/x - Step 3: Cross multiply
317,562.71x = 438,164.18 × 188,434.49 - Step 4: Simplify right side
317,562.71x = 82,565,240,661.57 - Step 5: Solve for x
x = 82,565,240,661.57/317,562.71 - Step 6: Final answer
x = 259,996.65
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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.