Finding the Fourth Proportional to 279,936,713.80, 420,115,022.70 and 143,551,894.60
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Solution
The fourth proportional to 279,936,713.80, 420,115,022.70 and 143,551,894.60 is: 215,435,505.55
Step by Step Solution
- Step 1: Write the proportion equation
279,936,713.80 : 420,115,022.70 = 143,551,894.60 : x - Step 2: Convert to fraction form
279,936,713.80/420,115,022.70 = 143,551,894.60/x - Step 3: Cross multiply
279,936,713.80x = 420,115,022.70 × 143,551,894.60 - Step 4: Simplify right side
279,936,713.80x = 60,308,307,458,507,000 - Step 5: Solve for x
x = 60,308,307,458,507,000/279,936,713.80 - Step 6: Final answer
x = 215,435,505.55
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.