Finding the Fourth Proportional to 209,078,732.88, 288,535,698.77 and 115,000,155.99
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Solution
The fourth proportional to 209,078,732.88, 288,535,698.77 and 115,000,155.99 is: 158,704,091.56
Step by Step Solution
- Step 1: Write the proportion equation
209,078,732.88 : 288,535,698.77 = 115,000,155.99 : x - Step 2: Convert to fraction form
209,078,732.88/288,535,698.77 = 115,000,155.99/x - Step 3: Cross multiply
209,078,732.88x = 288,535,698.77 × 115,000,155.99 - Step 4: Simplify right side
209,078,732.88x = 33,181,650,366,658,648 - Step 5: Solve for x
x = 33,181,650,366,658,648/209,078,732.88 - Step 6: Final answer
x = 158,704,091.56
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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.