Finding the Fourth Proportional to 209,985.30, 289,772.49 and 119,339.68
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Solution
The fourth proportional to 209,985.30, 289,772.49 and 119,339.68 is: 164,684.65
Step by Step Solution
- Step 1: Write the proportion equation
209,985.30 : 289,772.49 = 119,339.68 : x - Step 2: Convert to fraction form
209,985.30/289,772.49 = 119,339.68/x - Step 3: Cross multiply
209,985.30x = 289,772.49 × 119,339.68 - Step 4: Simplify right side
209,985.30x = 34,581,356,229.40 - Step 5: Solve for x
x = 34,581,356,229.40/209,985.30 - Step 6: Final answer
x = 164,684.65
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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.