Finding the Fourth Proportional to 278,886,943.31, 418,381,481.42 and 115,035,314.09
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Solution
The fourth proportional to 278,886,943.31, 418,381,481.42 and 115,035,314.09 is: 172,574,035.03
Step by Step Solution
- Step 1: Write the proportion equation
278,886,943.31 : 418,381,481.42 = 115,035,314.09 : x - Step 2: Convert to fraction form
278,886,943.31/418,381,481.42 = 115,035,314.09/x - Step 3: Cross multiply
278,886,943.31x = 418,381,481.42 × 115,035,314.09 - Step 4: Simplify right side
278,886,943.31x = 48,128,645,122,784,880 - Step 5: Solve for x
x = 48,128,645,122,784,880/278,886,943.31 - Step 6: Final answer
x = 172,574,035.03
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.