Finding the Fourth Proportional to 312,292.80, 468,369.07 and 143,651.14
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Solution
The fourth proportional to 312,292.80, 468,369.07 and 143,651.14 is: 215,444.45
Step by Step Solution
- Step 1: Write the proportion equation
312,292.80 : 468,369.07 = 143,651.14 : x - Step 2: Convert to fraction form
312,292.80/468,369.07 = 143,651.14/x - Step 3: Cross multiply
312,292.80x = 468,369.07 × 143,651.14 - Step 4: Simplify right side
312,292.80x = 67,281,749,316.19 - Step 5: Solve for x
x = 67,281,749,316.19/312,292.80 - Step 6: Final answer
x = 215,444.45
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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.