Finding the Fourth Proportional to 230,935,791.68, 318,691,366.08 and 138,116,284.64
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Solution
The fourth proportional to 230,935,791.68, 318,691,366.08 and 138,116,284.64 is: 190,600,456.99
Step by Step Solution
- Step 1: Write the proportion equation
230,935,791.68 : 318,691,366.08 = 138,116,284.64 : x - Step 2: Convert to fraction form
230,935,791.68/318,691,366.08 = 138,116,284.64/x - Step 3: Cross multiply
230,935,791.68x = 318,691,366.08 × 138,116,284.64 - Step 4: Simplify right side
230,935,791.68x = 44,016,467,429,815,712 - Step 5: Solve for x
x = 44,016,467,429,815,712/230,935,791.68 - Step 6: Final answer
x = 190,600,456.99
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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.