Finding the Fourth Proportional to 286,713.66, 395,630.28 and 157,630.80
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Solution
The fourth proportional to 286,713.66, 395,630.28 and 157,630.80 is: 217,511.50
Step by Step Solution
- Step 1: Write the proportion equation
286,713.66 : 395,630.28 = 157,630.80 : x - Step 2: Convert to fraction form
286,713.66/395,630.28 = 157,630.80/x - Step 3: Cross multiply
286,713.66x = 395,630.28 × 157,630.80 - Step 4: Simplify right side
286,713.66x = 62,363,517,540.62 - Step 5: Solve for x
x = 62,363,517,540.62/286,713.66 - Step 6: Final answer
x = 217,511.50
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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.