Finding the Fourth Proportional to 280,485,341.67, 420,708,058.83 and 86,376,516.42
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Solution
The fourth proportional to 280,485,341.67, 420,708,058.83 and 86,376,516.42 is: 129,558,629.82
Step by Step Solution
- Step 1: Write the proportion equation
280,485,341.67 : 420,708,058.83 = 86,376,516.42 : x - Step 2: Convert to fraction form
280,485,341.67/420,708,058.83 = 86,376,516.42/x - Step 3: Cross multiply
280,485,341.67x = 420,708,058.83 × 86,376,516.42 - Step 4: Simplify right side
280,485,341.67x = 36,339,296,551,555,824 - Step 5: Solve for x
x = 36,339,296,551,555,824/280,485,341.67 - Step 6: Final answer
x = 129,558,629.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.