Finding the Fourth Proportional to 420,216.44, 630,330.12 and 139,733.68
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Solution
The fourth proportional to 420,216.44, 630,330.12 and 139,733.68 is: 209,602.34
Step by Step Solution
- Step 1: Write the proportion equation
420,216.44 : 630,330.12 = 139,733.68 : x - Step 2: Convert to fraction form
420,216.44/630,330.12 = 139,733.68/x - Step 3: Cross multiply
420,216.44x = 630,330.12 × 139,733.68 - Step 4: Simplify right side
420,216.44x = 88,078,347,282.44 - Step 5: Solve for x
x = 88,078,347,282.44/420,216.44 - Step 6: Final answer
x = 209,602.34
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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.