Finding the Fourth Proportional to 313,631.48, 432,811.80 and 170,391.68
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Solution
The fourth proportional to 313,631.48, 432,811.80 and 170,391.68 is: 235,140.71
Step by Step Solution
- Step 1: Write the proportion equation
313,631.48 : 432,811.80 = 170,391.68 : x - Step 2: Convert to fraction form
313,631.48/432,811.80 = 170,391.68/x - Step 3: Cross multiply
313,631.48x = 432,811.80 × 170,391.68 - Step 4: Simplify right side
313,631.48x = 73,747,529,725.82 - Step 5: Solve for x
x = 73,747,529,725.82/313,631.48 - Step 6: Final answer
x = 235,140.71
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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.