Finding the Fourth Proportional to 420,523.92, 630,552.52 and 139,888.08
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Solution
The fourth proportional to 420,523.92, 630,552.52 and 139,888.08 is: 209,754.49
Step by Step Solution
- Step 1: Write the proportion equation
420,523.92 : 630,552.52 = 139,888.08 : x - Step 2: Convert to fraction form
420,523.92/630,552.52 = 139,888.08/x - Step 3: Cross multiply
420,523.92x = 630,552.52 × 139,888.08 - Step 4: Simplify right side
420,523.92x = 88,206,781,361.96 - Step 5: Solve for x
x = 88,206,781,361.96/420,523.92 - Step 6: Final answer
x = 209,754.49
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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.