Finding the Fourth Proportional to 279,989.74, 419,986.28 and 69,627.68
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Solution
The fourth proportional to 279,989.74, 419,986.28 and 69,627.68 is: 104,441.94
Step by Step Solution
- Step 1: Write the proportion equation
279,989.74 : 419,986.28 = 69,627.68 : x - Step 2: Convert to fraction form
279,989.74/419,986.28 = 69,627.68/x - Step 3: Cross multiply
279,989.74x = 419,986.28 × 69,627.68 - Step 4: Simplify right side
279,989.74x = 29,242,670,308.23 - Step 5: Solve for x
x = 29,242,670,308.23/279,989.74 - Step 6: Final answer
x = 104,441.94
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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.