Finding the Fourth Proportional to 207,615.30, 310,904.55 and 137,112.90
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Solution
The fourth proportional to 207,615.30, 310,904.55 and 137,112.90 is: 205,326.99
Step by Step Solution
- Step 1: Write the proportion equation
207,615.30 : 310,904.55 = 137,112.90 : x - Step 2: Convert to fraction form
207,615.30/310,904.55 = 137,112.90/x - Step 3: Cross multiply
207,615.30x = 310,904.55 × 137,112.90 - Step 4: Simplify right side
207,615.30x = 42,629,024,473.70 - Step 5: Solve for x
x = 42,629,024,473.70/207,615.30 - Step 6: Final answer
x = 205,326.99
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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.