Finding the Fourth Proportional to 280,582.79, 420,874.18 and 103,012.97
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Solution
The fourth proportional to 280,582.79, 420,874.18 and 103,012.97 is: 154,519.45
Step by Step Solution
- Step 1: Write the proportion equation
280,582.79 : 420,874.18 = 103,012.97 : x - Step 2: Convert to fraction form
280,582.79/420,874.18 = 103,012.97/x - Step 3: Cross multiply
280,582.79x = 420,874.18 × 103,012.97 - Step 4: Simplify right side
280,582.79x = 43,355,496,916.21 - Step 5: Solve for x
x = 43,355,496,916.21/280,582.79 - Step 6: Final answer
x = 154,519.45
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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.