Finding the Fourth Proportional to 212,957,412.96, 293,881,426.38 and 115,172,268.96
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Solution
The fourth proportional to 212,957,412.96, 293,881,426.38 and 115,172,268.96 is: 158,937,837.43
Step by Step Solution
- Step 1: Write the proportion equation
212,957,412.96 : 293,881,426.38 = 115,172,268.96 : x - Step 2: Convert to fraction form
212,957,412.96/293,881,426.38 = 115,172,268.96/x - Step 3: Cross multiply
212,957,412.96x = 293,881,426.38 × 115,172,268.96 - Step 4: Simplify right side
212,957,412.96x = 33,846,990,681,385,796 - Step 5: Solve for x
x = 33,846,990,681,385,796/212,957,412.96 - Step 6: Final answer
x = 158,937,837.43
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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.