Finding the Fourth Proportional to 212,620,471.40, 318,914,118.30 and 83,202,948.20
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Solution
The fourth proportional to 212,620,471.40, 318,914,118.30 and 83,202,948.20 is: 124,797,930.75
Step by Step Solution
- Step 1: Write the proportion equation
212,620,471.40 : 318,914,118.30 = 83,202,948.20 : x - Step 2: Convert to fraction form
212,620,471.40/318,914,118.30 = 83,202,948.20/x - Step 3: Cross multiply
212,620,471.40x = 318,914,118.30 × 83,202,948.20 - Step 4: Simplify right side
212,620,471.40x = 26,534,594,865,163,576 - Step 5: Solve for x
x = 26,534,594,865,163,576/212,620,471.40 - Step 6: Final answer
x = 124,797,930.75
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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.