Finding the Fourth Proportional to 315,660.19, 435,620.28 and 172,422.49
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Solution
The fourth proportional to 315,660.19, 435,620.28 and 172,422.49 is: 237,948.07
Step by Step Solution
- Step 1: Write the proportion equation
315,660.19 : 435,620.28 = 172,422.49 : x - Step 2: Convert to fraction form
315,660.19/435,620.28 = 172,422.49/x - Step 3: Cross multiply
315,660.19x = 435,620.28 × 172,422.49 - Step 4: Simplify right side
315,660.19x = 75,110,733,372.10 - Step 5: Solve for x
x = 75,110,733,372.10/315,660.19 - Step 6: Final answer
x = 237,948.07
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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.