Finding the Fourth Proportional to 256,245,530.70, 384,368,296.05 and 213,163,380.30
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Solution
The fourth proportional to 256,245,530.70, 384,368,296.05 and 213,163,380.30 is: 319,745,070.45
Step by Step Solution
- Step 1: Write the proportion equation
256,245,530.70 : 384,368,296.05 = 213,163,380.30 : x - Step 2: Convert to fraction form
256,245,530.70/384,368,296.05 = 213,163,380.30/x - Step 3: Cross multiply
256,245,530.70x = 384,368,296.05 × 213,163,380.30 - Step 4: Simplify right side
256,245,530.70x = 81,933,245,266,169,152 - Step 5: Solve for x
x = 81,933,245,266,169,152/256,245,530.70 - Step 6: Final answer
x = 319,745,070.45
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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.