Finding the Fourth Proportional to 420,083.64, 630,207.48 and 135,844.80
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Solution
The fourth proportional to 420,083.64, 630,207.48 and 135,844.80 is: 203,793.72
Step by Step Solution
- Step 1: Write the proportion equation
420,083.64 : 630,207.48 = 135,844.80 : x - Step 2: Convert to fraction form
420,083.64/630,207.48 = 135,844.80/x - Step 3: Cross multiply
420,083.64x = 630,207.48 × 135,844.80 - Step 4: Simplify right side
420,083.64x = 85,610,409,079.10 - Step 5: Solve for x
x = 85,610,409,079.10/420,083.64 - Step 6: Final answer
x = 203,793.72
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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.