Finding the Fourth Proportional to 210,986.30, 316,260.74 and 131,918.96
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Solution
The fourth proportional to 210,986.30, 316,260.74 and 131,918.96 is: 197,741.69
Step by Step Solution
- Step 1: Write the proportion equation
210,986.30 : 316,260.74 = 131,918.96 : x - Step 2: Convert to fraction form
210,986.30/316,260.74 = 131,918.96/x - Step 3: Cross multiply
210,986.30x = 316,260.74 × 131,918.96 - Step 4: Simplify right side
210,986.30x = 41,720,787,909.63 - Step 5: Solve for x
x = 41,720,787,909.63/210,986.30 - Step 6: Final answer
x = 197,741.69
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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.