Finding the Fourth Proportional to 280,357.42, 420,105.63 and 190,283.14
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Solution
The fourth proportional to 280,357.42, 420,105.63 and 190,283.14 is: 285,132.52
Step by Step Solution
- Step 1: Write the proportion equation
280,357.42 : 420,105.63 = 190,283.14 : x - Step 2: Convert to fraction form
280,357.42/420,105.63 = 190,283.14/x - Step 3: Cross multiply
280,357.42x = 420,105.63 × 190,283.14 - Step 4: Simplify right side
280,357.42x = 79,939,018,408.08 - Step 5: Solve for x
x = 79,939,018,408.08/280,357.42 - Step 6: Final answer
x = 285,132.52
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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.