Finding the Fourth Proportional to 311,942,129.44, 430,493,590.68 and 172,712,891.32
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Solution
The fourth proportional to 311,942,129.44, 430,493,590.68 and 172,712,891.32 is: 238,351,238.02
Step by Step Solution
- Step 1: Write the proportion equation
311,942,129.44 : 430,493,590.68 = 172,712,891.32 : x - Step 2: Convert to fraction form
311,942,129.44/430,493,590.68 = 172,712,891.32/x - Step 3: Cross multiply
311,942,129.44x = 430,493,590.68 × 172,712,891.32 - Step 4: Simplify right side
311,942,129.44x = 74,351,792,741,071,408 - Step 5: Solve for x
x = 74,351,792,741,071,408/311,942,129.44 - Step 6: Final answer
x = 238,351,238.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.