Finding the Fourth Proportional to 221,296,483.80, 331,944,725.70 and 215,627,779.80
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Solution
The fourth proportional to 221,296,483.80, 331,944,725.70 and 215,627,779.80 is: 323,441,669.70
Step by Step Solution
- Step 1: Write the proportion equation
221,296,483.80 : 331,944,725.70 = 215,627,779.80 : x - Step 2: Convert to fraction form
221,296,483.80/331,944,725.70 = 215,627,779.80/x - Step 3: Cross multiply
221,296,483.80x = 331,944,725.70 × 215,627,779.80 - Step 4: Simplify right side
221,296,483.80x = 71,576,504,219,011,000 - Step 5: Solve for x
x = 71,576,504,219,011,000/221,296,483.80 - Step 6: Final answer
x = 323,441,669.70
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1.5x scale
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.