Finding the Fourth Proportional to 420,122.98, 630,464.70 and 217,905.46
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Solution
The fourth proportional to 420,122.98, 630,464.70 and 217,905.46 is: 327,003.54
Step by Step Solution
- Step 1: Write the proportion equation
420,122.98 : 630,464.70 = 217,905.46 : x - Step 2: Convert to fraction form
420,122.98/630,464.70 = 217,905.46/x - Step 3: Cross multiply
420,122.98x = 630,464.70 × 217,905.46 - Step 4: Simplify right side
420,122.98x = 137,381,700,467.26 - Step 5: Solve for x
x = 137,381,700,467.26/420,122.98 - Step 6: Final answer
x = 327,003.54
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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.