Finding the Fourth Proportional to 420,936.21, 631,409.79 and 140,453.46
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Solution
The fourth proportional to 420,936.21, 631,409.79 and 140,453.46 is: 210,682.02
Step by Step Solution
- Step 1: Write the proportion equation
420,936.21 : 631,409.79 = 140,453.46 : x - Step 2: Convert to fraction form
420,936.21/631,409.79 = 140,453.46/x - Step 3: Cross multiply
420,936.21x = 631,409.79 × 140,453.46 - Step 4: Simplify right side
420,936.21x = 88,683,690,011.97 - Step 5: Solve for x
x = 88,683,690,011.97/420,936.21 - Step 6: Final answer
x = 210,682.02
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.