Finding the Fourth Proportional to 397,402,119.66, 548,404,901.69 and 218,784,224.79
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Solution
The fourth proportional to 397,402,119.66, 548,404,901.69 and 218,784,224.79 is: 301,916,711.95
Step by Step Solution
- Step 1: Write the proportion equation
397,402,119.66 : 548,404,901.69 = 218,784,224.79 : x - Step 2: Convert to fraction form
397,402,119.66/548,404,901.69 = 218,784,224.79/x - Step 3: Cross multiply
397,402,119.66x = 548,404,901.69 × 218,784,224.79 - Step 4: Simplify right side
397,402,119.66x = 119,982,341,287,418,448 - Step 5: Solve for x
x = 119,982,341,287,418,448/397,402,119.66 - Step 6: Final answer
x = 301,916,711.95
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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.