Finding the Fourth Proportional to 318,889,755.36, 440,067,867.84 and 172,212,039.36
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Solution
The fourth proportional to 318,889,755.36, 440,067,867.84 and 172,212,039.36 is: 237,652,617.26
Step by Step Solution
- Step 1: Write the proportion equation
318,889,755.36 : 440,067,867.84 = 172,212,039.36 : x - Step 2: Convert to fraction form
318,889,755.36/440,067,867.84 = 172,212,039.36/x - Step 3: Cross multiply
318,889,755.36x = 440,067,867.84 × 172,212,039.36 - Step 4: Simplify right side
318,889,755.36x = 75,784,984,977,533,360 - Step 5: Solve for x
x = 75,784,984,977,533,360/318,889,755.36 - Step 6: Final answer
x = 237,652,617.26
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.