Finding the Fourth Proportional to 442,869,772.40, 664,304,658.60 and 136,122,027.20
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Solution
The fourth proportional to 442,869,772.40, 664,304,658.60 and 136,122,027.20 is: 204,183,040.80
Step by Step Solution
- Step 1: Write the proportion equation
442,869,772.40 : 664,304,658.60 = 136,122,027.20 : x - Step 2: Convert to fraction form
442,869,772.40/664,304,658.60 = 136,122,027.20/x - Step 3: Cross multiply
442,869,772.40x = 664,304,658.60 × 136,122,027.20 - Step 4: Simplify right side
442,869,772.40x = 90,426,496,807,035,904 - Step 5: Solve for x
x = 90,426,496,807,035,904/442,869,772.40 - Step 6: Final answer
x = 204,183,040.80
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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.