Finding the Fourth Proportional to 272,565,511.20, 408,848,266.80 and 163,726,394.40
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Solution
The fourth proportional to 272,565,511.20, 408,848,266.80 and 163,726,394.40 is: 245,589,591.60
Step by Step Solution
- Step 1: Write the proportion equation
272,565,511.20 : 408,848,266.80 = 163,726,394.40 : x - Step 2: Convert to fraction form
272,565,511.20/408,848,266.80 = 163,726,394.40/x - Step 3: Cross multiply
272,565,511.20x = 408,848,266.80 × 163,726,394.40 - Step 4: Simplify right side
272,565,511.20x = 66,939,252,579,853,232 - Step 5: Solve for x
x = 66,939,252,579,853,232/272,565,511.20 - Step 6: Final answer
x = 245,589,591.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.