Finding the Fourth Proportional to 213,023,219.80, 319,534,829.70 and 91,854,671.80
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Solution
The fourth proportional to 213,023,219.80, 319,534,829.70 and 91,854,671.80 is: 137,782,007.70
Step by Step Solution
- Step 1: Write the proportion equation
213,023,219.80 : 319,534,829.70 = 91,854,671.80 : x - Step 2: Convert to fraction form
213,023,219.80/319,534,829.70 = 91,854,671.80/x - Step 3: Cross multiply
213,023,219.80x = 319,534,829.70 × 91,854,671.80 - Step 4: Simplify right side
213,023,219.80x = 29,350,766,910,762,392 - Step 5: Solve for x
x = 29,350,766,910,762,392/213,023,219.80 - Step 6: Final answer
x = 137,782,007.70
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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.