Finding the Fourth Proportional to 213,022,801.80, 319,534,202.70 and 91,854,253.80
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Solution
The fourth proportional to 213,022,801.80, 319,534,202.70 and 91,854,253.80 is: 137,781,380.70
Step by Step Solution
- Step 1: Write the proportion equation
213,022,801.80 : 319,534,202.70 = 91,854,253.80 : x - Step 2: Convert to fraction form
213,022,801.80/319,534,202.70 = 91,854,253.80/x - Step 3: Cross multiply
213,022,801.80x = 319,534,202.70 × 91,854,253.80 - Step 4: Simplify right side
213,022,801.80x = 29,350,575,752,586,444 - Step 5: Solve for x
x = 29,350,575,752,586,444/213,022,801.80 - Step 6: Final answer
x = 137,781,380.70
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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.