Finding the Fourth Proportional to 209,751,437.96, 289,458,221.48 and 121,697,865.62
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Solution
The fourth proportional to 209,751,437.96, 289,458,221.48 and 121,697,865.62 is: 167,943,772.31
Step by Step Solution
- Step 1: Write the proportion equation
209,751,437.96 : 289,458,221.48 = 121,697,865.62 : x - Step 2: Convert to fraction form
209,751,437.96/289,458,221.48 = 121,697,865.62/x - Step 3: Cross multiply
209,751,437.96x = 289,458,221.48 × 121,697,865.62 - Step 4: Simplify right side
209,751,437.96x = 35,226,447,738,221,460 - Step 5: Solve for x
x = 35,226,447,738,221,460/209,751,437.96 - Step 6: Final answer
x = 167,943,772.31
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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.