Finding the Fourth Proportional to 210,913.23, 316,366.20 and 53,138.19
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Solution
The fourth proportional to 210,913.23, 316,366.20 and 53,138.19 is: 79,706.37
Step by Step Solution
- Step 1: Write the proportion equation
210,913.23 : 316,366.20 = 53,138.19 : x - Step 2: Convert to fraction form
210,913.23/316,366.20 = 53,138.19/x - Step 3: Cross multiply
210,913.23x = 316,366.20 × 53,138.19 - Step 4: Simplify right side
210,913.23x = 16,811,127,245.18 - Step 5: Solve for x
x = 16,811,127,245.18/210,913.23 - Step 6: Final answer
x = 79,706.37
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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.