Finding the Fourth Proportional to 420,520.92, 630,548.02 and 139,885.08
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Solution
The fourth proportional to 420,520.92, 630,548.02 and 139,885.08 is: 209,749.99
Step by Step Solution
- Step 1: Write the proportion equation
420,520.92 : 630,548.02 = 139,885.08 : x - Step 2: Convert to fraction form
420,520.92/630,548.02 = 139,885.08/x - Step 3: Cross multiply
420,520.92x = 630,548.02 × 139,885.08 - Step 4: Simplify right side
420,520.92x = 88,204,260,221.54 - Step 5: Solve for x
x = 88,204,260,221.54/420,520.92 - Step 6: Final answer
x = 209,749.99
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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.