Finding the Fourth Proportional to 396,919.20, 595,378.80 and 239,455.20
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Solution
The fourth proportional to 396,919.20, 595,378.80 and 239,455.20 is: 359,182.80
Step by Step Solution
- Step 1: Write the proportion equation
396,919.20 : 595,378.80 = 239,455.20 : x - Step 2: Convert to fraction form
396,919.20/595,378.80 = 239,455.20/x - Step 3: Cross multiply
396,919.20x = 595,378.80 × 239,455.20 - Step 4: Simplify right side
396,919.20x = 142,566,549,629.76 - Step 5: Solve for x
x = 142,566,549,629.76/396,919.20 - Step 6: Final answer
x = 359,182.80
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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.