Finding the Fourth Proportional to 261,972.28, 393,130.50 and 143,726.68
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Solution
The fourth proportional to 261,972.28, 393,130.50 and 143,726.68 is: 215,684.43
Step by Step Solution
- Step 1: Write the proportion equation
261,972.28 : 393,130.50 = 143,726.68 : x - Step 2: Convert to fraction form
261,972.28/393,130.50 = 143,726.68/x - Step 3: Cross multiply
261,972.28x = 393,130.50 × 143,726.68 - Step 4: Simplify right side
261,972.28x = 56,503,341,571.74 - Step 5: Solve for x
x = 56,503,341,571.74/261,972.28 - Step 6: Final answer
x = 215,684.43
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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.