Finding the Fourth Proportional to 430,199.28, 643,951.08 and 278,194.68
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Solution
The fourth proportional to 430,199.28, 643,951.08 and 278,194.68 is: 416,420.42
Step by Step Solution
- Step 1: Write the proportion equation
430,199.28 : 643,951.08 = 278,194.68 : x - Step 2: Convert to fraction form
430,199.28/643,951.08 = 278,194.68/x - Step 3: Cross multiply
430,199.28x = 643,951.08 × 278,194.68 - Step 4: Simplify right side
430,199.28x = 179,143,764,636.25 - Step 5: Solve for x
x = 179,143,764,636.25/430,199.28 - Step 6: Final answer
x = 416,420.42
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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.