Finding the Fourth Proportional to 198,514,876.80, 297,772,315.20 and 143,670,165.60
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Solution
The fourth proportional to 198,514,876.80, 297,772,315.20 and 143,670,165.60 is: 215,505,248.40
Step by Step Solution
- Step 1: Write the proportion equation
198,514,876.80 : 297,772,315.20 = 143,670,165.60 : x - Step 2: Convert to fraction form
198,514,876.80/297,772,315.20 = 143,670,165.60/x - Step 3: Cross multiply
198,514,876.80x = 297,772,315.20 × 143,670,165.60 - Step 4: Simplify right side
198,514,876.80x = 42,780,997,835,879,392 - Step 5: Solve for x
x = 42,780,997,835,879,392/198,514,876.80 - Step 6: Final answer
x = 215,505,248.40
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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.