Finding the Fourth Proportional to 315,660.69, 435,620.97 and 172,422.99
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Solution
The fourth proportional to 315,660.69, 435,620.97 and 172,422.99 is: 237,948.76
Step by Step Solution
- Step 1: Write the proportion equation
315,660.69 : 435,620.97 = 172,422.99 : x - Step 2: Convert to fraction form
315,660.69/435,620.97 = 172,422.99/x - Step 3: Cross multiply
315,660.69x = 435,620.97 × 172,422.99 - Step 4: Simplify right side
315,660.69x = 75,111,070,154.10 - Step 5: Solve for x
x = 75,111,070,154.10/315,660.69 - Step 6: Final answer
x = 237,948.76
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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.