Finding the Fourth Proportional to 420,638.01, 630,432.14 and 210,336.09
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Solution
The fourth proportional to 420,638.01, 630,432.14 and 210,336.09 is: 315,241.67
Step by Step Solution
- Step 1: Write the proportion equation
420,638.01 : 630,432.14 = 210,336.09 : x - Step 2: Convert to fraction form
420,638.01/630,432.14 = 210,336.09/x - Step 3: Cross multiply
420,638.01x = 630,432.14 × 210,336.09 - Step 4: Simplify right side
420,638.01x = 132,602,630,286.25 - Step 5: Solve for x
x = 132,602,630,286.25/420,638.01 - Step 6: Final answer
x = 315,241.67
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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.