Finding the Fourth Proportional to 239,430,086.75, 330,413,373.57 and 129,421,799.75
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Solution
The fourth proportional to 239,430,086.75, 330,413,373.57 and 129,421,799.75 is: 178,602,004.65
Step by Step Solution
- Step 1: Write the proportion equation
239,430,086.75 : 330,413,373.57 = 129,421,799.75 : x - Step 2: Convert to fraction form
239,430,086.75/330,413,373.57 = 129,421,799.75/x - Step 3: Cross multiply
239,430,086.75x = 330,413,373.57 × 129,421,799.75 - Step 4: Simplify right side
239,430,086.75x = 42,762,693,467,622,272 - Step 5: Solve for x
x = 42,762,693,467,622,272/239,430,086.75 - Step 6: Final answer
x = 178,602,004.65
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1.5x scale
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.