Finding the Fourth Proportional to 378,157,623.76, 521,856,471.99 and 210,894,042.61
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Solution
The fourth proportional to 378,157,623.76, 521,856,471.99 and 210,894,042.61 is: 291,033,193.90
Step by Step Solution
- Step 1: Write the proportion equation
378,157,623.76 : 521,856,471.99 = 210,894,042.61 : x - Step 2: Convert to fraction form
378,157,623.76/521,856,471.99 = 210,894,042.61/x - Step 3: Cross multiply
378,157,623.76x = 521,856,471.99 × 210,894,042.61 - Step 4: Simplify right side
378,157,623.76x = 110,056,421,040,163,344 - Step 5: Solve for x
x = 110,056,421,040,163,344/378,157,623.76 - Step 6: Final answer
x = 291,033,193.90
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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.