Finding the Fourth Proportional to 212,582,590.80, 318,873,886.20 and 68,975,422.80
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Solution
The fourth proportional to 212,582,590.80, 318,873,886.20 and 68,975,422.80 is: 103,463,134.20
Step by Step Solution
- Step 1: Write the proportion equation
212,582,590.80 : 318,873,886.20 = 68,975,422.80 : x - Step 2: Convert to fraction form
212,582,590.80/318,873,886.20 = 68,975,422.80/x - Step 3: Cross multiply
212,582,590.80x = 318,873,886.20 × 68,975,422.80 - Step 4: Simplify right side
212,582,590.80x = 21,994,461,120,524,084 - Step 5: Solve for x
x = 21,994,461,120,524,084/212,582,590.80 - Step 6: Final answer
x = 103,463,134.20
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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.