Finding the Fourth Proportional to 315,294.80, 435,116.07 and 172,064.09
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Solution
The fourth proportional to 315,294.80, 435,116.07 and 172,064.09 is: 237,453.49
Step by Step Solution
- Step 1: Write the proportion equation
315,294.80 : 435,116.07 = 172,064.09 : x - Step 2: Convert to fraction form
315,294.80/435,116.07 = 172,064.09/x - Step 3: Cross multiply
315,294.80x = 435,116.07 × 172,064.09 - Step 4: Simplify right side
315,294.80x = 74,867,850,628.93 - Step 5: Solve for x
x = 74,867,850,628.93/315,294.80 - Step 6: Final answer
x = 237,453.49
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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.