Finding the Fourth Proportional to 312,322,456.20, 431,005,030.41 and 173,102,206.08
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Solution
The fourth proportional to 312,322,456.20, 431,005,030.41 and 173,102,206.08 is: 238,881,067.03
Step by Step Solution
- Step 1: Write the proportion equation
312,322,456.20 : 431,005,030.41 = 173,102,206.08 : x - Step 2: Convert to fraction form
312,322,456.20/431,005,030.41 = 173,102,206.08/x - Step 3: Cross multiply
312,322,456.20x = 431,005,030.41 × 173,102,206.08 - Step 4: Simplify right side
312,322,456.20x = 74,607,921,595,548,496 - Step 5: Solve for x
x = 74,607,921,595,548,496/312,322,456.20 - Step 6: Final answer
x = 238,881,067.03
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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.