Finding the Fourth Proportional to 318,538,173.84, 439,347,991.32 and 240,225,028.08
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Solution
The fourth proportional to 318,538,173.84, 439,347,991.32 and 240,225,028.08 is: 331,333,548.75
Step by Step Solution
- Step 1: Write the proportion equation
318,538,173.84 : 439,347,991.32 = 240,225,028.08 : x - Step 2: Convert to fraction form
318,538,173.84/439,347,991.32 = 240,225,028.08/x - Step 3: Cross multiply
318,538,173.84x = 439,347,991.32 × 240,225,028.08 - Step 4: Simplify right side
318,538,173.84x = 105,542,383,551,738,608 - Step 5: Solve for x
x = 105,542,383,551,738,608/318,538,173.84 - Step 6: Final answer
x = 331,333,548.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.