Finding the Fourth Proportional to 257,882,128.80, 386,823,193.20 and 242,753,143.20
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Solution
The fourth proportional to 257,882,128.80, 386,823,193.20 and 242,753,143.20 is: 364,129,714.80
Step by Step Solution
- Step 1: Write the proportion equation
257,882,128.80 : 386,823,193.20 = 242,753,143.20 : x - Step 2: Convert to fraction form
257,882,128.80/386,823,193.20 = 242,753,143.20/x - Step 3: Cross multiply
257,882,128.80x = 386,823,193.20 × 242,753,143.20 - Step 4: Simplify right side
257,882,128.80x = 93,902,546,011,960,864 - Step 5: Solve for x
x = 93,902,546,011,960,864/257,882,128.80 - Step 6: Final answer
x = 364,129,714.80
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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.