Finding the Fourth Proportional to 420,197.50, 630,301.74 and 139,714.75
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Solution
The fourth proportional to 420,197.50, 630,301.74 and 139,714.75 is: 209,573.95
Step by Step Solution
- Step 1: Write the proportion equation
420,197.50 : 630,301.74 = 139,714.75 : x - Step 2: Convert to fraction form
420,197.50/630,301.74 = 139,714.75/x - Step 3: Cross multiply
420,197.50x = 630,301.74 × 139,714.75 - Step 4: Simplify right side
420,197.50x = 88,062,450,028.67 - Step 5: Solve for x
x = 88,062,450,028.67/420,197.50 - Step 6: Final answer
x = 209,573.95
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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.