Finding the Fourth Proportional to 213,034.28, 319,246.97 and 156,430.26
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Solution
The fourth proportional to 213,034.28, 319,246.97 and 156,430.26 is: 234,421.84
Step by Step Solution
- Step 1: Write the proportion equation
213,034.28 : 319,246.97 = 156,430.26 : x - Step 2: Convert to fraction form
213,034.28/319,246.97 = 156,430.26/x - Step 3: Cross multiply
213,034.28x = 319,246.97 × 156,430.26 - Step 4: Simplify right side
213,034.28x = 49,939,885,739.16 - Step 5: Solve for x
x = 49,939,885,739.16/213,034.28 - Step 6: Final answer
x = 234,421.84
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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.