Finding the Fourth Proportional to 397,419,295.52, 548,438,652.50 and 221,203,510.40
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Solution
The fourth proportional to 397,419,295.52, 548,438,652.50 and 221,203,510.40 is: 305,260,858.09
Step by Step Solution
- Step 1: Write the proportion equation
397,419,295.52 : 548,438,652.50 = 221,203,510.40 : x - Step 2: Convert to fraction form
397,419,295.52/548,438,652.50 = 221,203,510.40/x - Step 3: Cross multiply
397,419,295.52x = 548,438,652.50 × 221,203,510.40 - Step 4: Simplify right side
397,419,295.52x = 121,316,555,172,310,816 - Step 5: Solve for x
x = 121,316,555,172,310,816/397,419,295.52 - Step 6: Final answer
x = 305,260,858.09
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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.