Finding the Fourth Proportional to 313,478.09, 432,668.65 and 206,058.12
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Solution
The fourth proportional to 313,478.09, 432,668.65 and 206,058.12 is: 284,405.49
Step by Step Solution
- Step 1: Write the proportion equation
313,478.09 : 432,668.65 = 206,058.12 : x - Step 2: Convert to fraction form
313,478.09/432,668.65 = 206,058.12/x - Step 3: Cross multiply
313,478.09x = 432,668.65 × 206,058.12 - Step 4: Simplify right side
313,478.09x = 89,154,888,601.94 - Step 5: Solve for x
x = 89,154,888,601.94/313,478.09 - Step 6: Final answer
x = 284,405.49
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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.