Finding the Fourth Proportional to 389,183.51, 537,052.39 and 219,406.70
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Solution
The fourth proportional to 389,183.51, 537,052.39 and 219,406.70 is: 302,769.49
Step by Step Solution
- Step 1: Write the proportion equation
389,183.51 : 537,052.39 = 219,406.70 : x - Step 2: Convert to fraction form
389,183.51/537,052.39 = 219,406.70/x - Step 3: Cross multiply
389,183.51x = 537,052.39 × 219,406.70 - Step 4: Simplify right side
389,183.51x = 117,832,889,383.23 - Step 5: Solve for x
x = 117,832,889,383.23/389,183.51 - Step 6: Final answer
x = 302,769.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.