Finding the Fourth Proportional to 509,990.70, 764,986.05 and 210,371.70
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Solution
The fourth proportional to 509,990.70, 764,986.05 and 210,371.70 is: 315,557.55
Step by Step Solution
- Step 1: Write the proportion equation
509,990.70 : 764,986.05 = 210,371.70 : x - Step 2: Convert to fraction form
509,990.70/764,986.05 = 210,371.70/x - Step 3: Cross multiply
509,990.70x = 764,986.05 × 210,371.70 - Step 4: Simplify right side
509,990.70x = 160,931,415,814.79 - Step 5: Solve for x
x = 160,931,415,814.79/509,990.70 - Step 6: Final answer
x = 315,557.55
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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.