Finding the Fourth Proportional to 420,474.10, 631,560.12 and 252,313.84
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Solution
The fourth proportional to 420,474.10, 631,560.12 and 252,313.84 is: 378,980.20
Step by Step Solution
- Step 1: Write the proportion equation
420,474.10 : 631,560.12 = 252,313.84 : x - Step 2: Convert to fraction form
420,474.10/631,560.12 = 252,313.84/x - Step 3: Cross multiply
420,474.10x = 631,560.12 × 252,313.84 - Step 4: Simplify right side
420,474.10x = 159,351,359,068.06 - Step 5: Solve for x
x = 159,351,359,068.06/420,474.10 - Step 6: Final answer
x = 378,980.20
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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.