Finding the Fourth Proportional to 312,129.80, 468,194.70 and 249,921.80
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Solution
The fourth proportional to 312,129.80, 468,194.70 and 249,921.80 is: 374,882.70
Step by Step Solution
- Step 1: Write the proportion equation
312,129.80 : 468,194.70 = 249,921.80 : x - Step 2: Convert to fraction form
312,129.80/468,194.70 = 249,921.80/x - Step 3: Cross multiply
312,129.80x = 468,194.70 × 249,921.80 - Step 4: Simplify right side
312,129.80x = 117,012,062,174.46 - Step 5: Solve for x
x = 117,012,062,174.46/312,129.80 - Step 6: Final answer
x = 374,882.70
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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.