Finding the Fourth Proportional to 420,225.68, 630,279.12 and 120,731.96
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Solution
The fourth proportional to 420,225.68, 630,279.12 and 120,731.96 is: 181,080.87
Step by Step Solution
- Step 1: Write the proportion equation
420,225.68 : 630,279.12 = 120,731.96 : x - Step 2: Convert to fraction form
420,225.68/630,279.12 = 120,731.96/x - Step 3: Cross multiply
420,225.68x = 630,279.12 × 120,731.96 - Step 4: Simplify right side
420,225.68x = 76,094,833,504.68 - Step 5: Solve for x
x = 76,094,833,504.68/420,225.68 - Step 6: Final answer
x = 181,080.87
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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.