Finding the Fourth Proportional to 208,415,732.25, 312,228,997.97 and 139,119,587.49
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Solution
The fourth proportional to 208,415,732.25, 312,228,997.97 and 139,119,587.49 is: 208,415,981.51
Step by Step Solution
- Step 1: Write the proportion equation
208,415,732.25 : 312,228,997.97 = 139,119,587.49 : x - Step 2: Convert to fraction form
208,415,732.25/312,228,997.97 = 139,119,587.49/x - Step 3: Cross multiply
208,415,732.25x = 312,228,997.97 × 139,119,587.49 - Step 4: Simplify right side
208,415,732.25x = 43,437,169,400,477,704 - Step 5: Solve for x
x = 43,437,169,400,477,704/208,415,732.25 - Step 6: Final answer
x = 208,415,981.51
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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.