Finding the Fourth Proportional to 312,193.80, 430,828.56 and 168,953.82
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Solution
The fourth proportional to 312,193.80, 430,828.56 and 168,953.82 is: 233,156.88
Step by Step Solution
- Step 1: Write the proportion equation
312,193.80 : 430,828.56 = 168,953.82 : x - Step 2: Convert to fraction form
312,193.80/430,828.56 = 168,953.82/x - Step 3: Cross multiply
312,193.80x = 430,828.56 × 168,953.82 - Step 4: Simplify right side
312,193.80x = 72,790,130,977.10 - Step 5: Solve for x
x = 72,790,130,977.10/312,193.80 - Step 6: Final answer
x = 233,156.88
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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.