Finding the Fourth Proportional to 212,889,643.20, 319,334,464.80 and 212,889,643.20
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Solution
The fourth proportional to 212,889,643.20, 319,334,464.80 and 212,889,643.20 is: 319,334,464.80
Step by Step Solution
- Step 1: Write the proportion equation
212,889,643.20 : 319,334,464.80 = 212,889,643.20 : x - Step 2: Convert to fraction form
212,889,643.20/319,334,464.80 = 212,889,643.20/x - Step 3: Cross multiply
212,889,643.20x = 319,334,464.80 × 212,889,643.20 - Step 4: Simplify right side
212,889,643.20x = 67,983,000,272,734,960 - Step 5: Solve for x
x = 67,983,000,272,734,960/212,889,643.20 - Step 6: Final answer
x = 319,334,464.80
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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.