Finding the Fourth Proportional to 302,893.84, 417,920.09 and 172,042.38
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Solution
The fourth proportional to 302,893.84, 417,920.09 and 172,042.38 is: 237,376.79
Step by Step Solution
- Step 1: Write the proportion equation
302,893.84 : 417,920.09 = 172,042.38 : x - Step 2: Convert to fraction form
302,893.84/417,920.09 = 172,042.38/x - Step 3: Cross multiply
302,893.84x = 417,920.09 × 172,042.38 - Step 4: Simplify right side
302,893.84x = 71,899,966,073.20 - Step 5: Solve for x
x = 71,899,966,073.20/302,893.84 - Step 6: Final answer
x = 237,376.79
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1.5x scale
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.