Finding the Fourth Proportional to 325,190.70, 487,713.15 and 213,653.70
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Solution
The fourth proportional to 325,190.70, 487,713.15 and 213,653.70 is: 320,432.65
Step by Step Solution
- Step 1: Write the proportion equation
325,190.70 : 487,713.15 = 213,653.70 : x - Step 2: Convert to fraction form
325,190.70/487,713.15 = 213,653.70/x - Step 3: Cross multiply
325,190.70x = 487,713.15 × 213,653.70 - Step 4: Simplify right side
325,190.70x = 104,201,719,036.16 - Step 5: Solve for x
x = 104,201,719,036.16/325,190.70 - Step 6: Final answer
x = 320,432.65
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1.5x scale
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.