Finding the Fourth Proportional to 386,358.30, 579,537.45 and 173,125.80
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Solution
The fourth proportional to 386,358.30, 579,537.45 and 173,125.80 is: 259,688.70
Step by Step Solution
- Step 1: Write the proportion equation
386,358.30 : 579,537.45 = 173,125.80 : x - Step 2: Convert to fraction form
386,358.30/579,537.45 = 173,125.80/x - Step 3: Cross multiply
386,358.30x = 579,537.45 × 173,125.80 - Step 4: Simplify right side
386,358.30x = 100,332,884,661.21 - Step 5: Solve for x
x = 100,332,884,661.21/386,358.30 - Step 6: Final answer
x = 259,688.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.