Finding the Fourth Proportional to 431,348,245.80, 647,022,368.70 and 239,872,021.80
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Solution
The fourth proportional to 431,348,245.80, 647,022,368.70 and 239,872,021.80 is: 359,808,032.70
Step by Step Solution
- Step 1: Write the proportion equation
431,348,245.80 : 647,022,368.70 = 239,872,021.80 : x - Step 2: Convert to fraction form
431,348,245.80/647,022,368.70 = 239,872,021.80/x - Step 3: Cross multiply
431,348,245.80x = 647,022,368.70 × 239,872,021.80 - Step 4: Simplify right side
431,348,245.80x = 155,202,563,729,894,048 - Step 5: Solve for x
x = 155,202,563,729,894,048/431,348,245.80 - Step 6: Final answer
x = 359,808,032.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.