Finding the Fourth Proportional to 210,369,406.96, 290,338,621.04 and 121,059,515.68
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Solution
The fourth proportional to 210,369,406.96, 290,338,621.04 and 121,059,515.68 is: 167,078,727.63
Step by Step Solution
- Step 1: Write the proportion equation
210,369,406.96 : 290,338,621.04 = 121,059,515.68 : x - Step 2: Convert to fraction form
210,369,406.96/290,338,621.04 = 121,059,515.68/x - Step 3: Cross multiply
210,369,406.96x = 290,338,621.04 × 121,059,515.68 - Step 4: Simplify right side
210,369,406.96x = 35,148,252,846,301,464 - Step 5: Solve for x
x = 35,148,252,846,301,464/210,369,406.96 - Step 6: Final answer
x = 167,078,727.63
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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.