Finding the Fourth Proportional to 372,121,412.07, 513,511,817.18 and 202,572,124.64
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Solution
The fourth proportional to 372,121,412.07, 513,511,817.18 and 202,572,124.64 is: 279,540,968.25
Step by Step Solution
- Step 1: Write the proportion equation
372,121,412.07 : 513,511,817.18 = 202,572,124.64 : x - Step 2: Convert to fraction form
372,121,412.07/513,511,817.18 = 202,572,124.64/x - Step 3: Cross multiply
372,121,412.07x = 513,511,817.18 × 202,572,124.64 - Step 4: Simplify right side
372,121,412.07x = 104,023,179,835,690,064 - Step 5: Solve for x
x = 104,023,179,835,690,064/372,121,412.07 - Step 6: Final answer
x = 279,540,968.25
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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.