Finding the Fourth Proportional to 239,958,242.40, 331,140,725.92 and 129,947,437.92
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Solution
The fourth proportional to 239,958,242.40, 331,140,725.92 and 129,947,437.92 is: 179,326,571.55
Step by Step Solution
- Step 1: Write the proportion equation
239,958,242.40 : 331,140,725.92 = 129,947,437.92 : x - Step 2: Convert to fraction form
239,958,242.40/331,140,725.92 = 129,947,437.92/x - Step 3: Cross multiply
239,958,242.40x = 331,140,725.92 × 129,947,437.92 - Step 4: Simplify right side
239,958,242.40x = 43,030,888,924,272,936 - Step 5: Solve for x
x = 43,030,888,924,272,936/239,958,242.40 - Step 6: Final answer
x = 179,326,571.55
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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.