Finding the Fourth Proportional to 210,904.81, 316,390.20 and 68,717.08
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Solution
The fourth proportional to 210,904.81, 316,390.20 and 68,717.08 is: 103,086.36
Step by Step Solution
- Step 1: Write the proportion equation
210,904.81 : 316,390.20 = 68,717.08 : x - Step 2: Convert to fraction form
210,904.81/316,390.20 = 68,717.08/x - Step 3: Cross multiply
210,904.81x = 316,390.20 × 68,717.08 - Step 4: Simplify right side
210,904.81x = 21,741,409,429.25 - Step 5: Solve for x
x = 21,741,409,429.25/210,904.81 - Step 6: Final answer
x = 103,086.36
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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.