Finding the Fourth Proportional to 420,231.16, 630,232.26 and 139,711.96
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Solution
The fourth proportional to 420,231.16, 630,232.26 and 139,711.96 is: 209,529.88
Step by Step Solution
- Step 1: Write the proportion equation
420,231.16 : 630,232.26 = 139,711.96 : x - Step 2: Convert to fraction form
420,231.16/630,232.26 = 139,711.96/x - Step 3: Cross multiply
420,231.16x = 630,232.26 × 139,711.96 - Step 4: Simplify right side
420,231.16x = 88,050,984,299.83 - Step 5: Solve for x
x = 88,050,984,299.83/420,231.16 - Step 6: Final answer
x = 209,529.88
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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.