Finding the Fourth Proportional to 392,941.18, 589,437.69 and 143,798.14
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Solution
The fourth proportional to 392,941.18, 589,437.69 and 143,798.14 is: 215,706.70
Step by Step Solution
- Step 1: Write the proportion equation
392,941.18 : 589,437.69 = 143,798.14 : x - Step 2: Convert to fraction form
392,941.18/589,437.69 = 143,798.14/x - Step 3: Cross multiply
392,941.18x = 589,437.69 × 143,798.14 - Step 4: Simplify right side
392,941.18x = 84,760,043,467.90 - Step 5: Solve for x
x = 84,760,043,467.90/392,941.18 - Step 6: Final answer
x = 215,706.70
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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.