Finding the Fourth Proportional to 289,762,711.44, 399,836,247.58 and 195,881,125.63
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Solution
The fourth proportional to 289,762,711.44, 399,836,247.58 and 195,881,125.63 is: 270,291,418.29
Step by Step Solution
- Step 1: Write the proportion equation
289,762,711.44 : 399,836,247.58 = 195,881,125.63 : x - Step 2: Convert to fraction form
289,762,711.44/399,836,247.58 = 195,881,125.63/x - Step 3: Cross multiply
289,762,711.44x = 399,836,247.58 × 195,881,125.63 - Step 4: Simplify right side
289,762,711.44x = 78,320,374,242,787,376 - Step 5: Solve for x
x = 78,320,374,242,787,376/289,762,711.44 - Step 6: Final answer
x = 270,291,418.29
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.