Finding the Fourth Proportional to 258,904,478.76, 388,354,060.92 and 149,660,138.20
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Solution
The fourth proportional to 258,904,478.76, 388,354,060.92 and 149,660,138.20 is: 224,488,671.29
Step by Step Solution
- Step 1: Write the proportion equation
258,904,478.76 : 388,354,060.92 = 149,660,138.20 : x - Step 2: Convert to fraction form
258,904,478.76/388,354,060.92 = 149,660,138.20/x - Step 3: Cross multiply
258,904,478.76x = 388,354,060.92 × 149,660,138.20 - Step 4: Simplify right side
258,904,478.76x = 58,121,122,427,818,416 - Step 5: Solve for x
x = 58,121,122,427,818,416/258,904,478.76 - Step 6: Final answer
x = 224,488,671.29
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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.