Finding the Fourth Proportional to 209,751,440.47, 289,458,224.91 and 121,697,868.13
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Solution
The fourth proportional to 209,751,440.47, 289,458,224.91 and 121,697,868.13 is: 167,943,775.76
Step by Step Solution
- Step 1: Write the proportion equation
209,751,440.47 : 289,458,224.91 = 121,697,868.13 : x - Step 2: Convert to fraction form
209,751,440.47/289,458,224.91 = 121,697,868.13/x - Step 3: Cross multiply
209,751,440.47x = 289,458,224.91 × 121,697,868.13 - Step 4: Simplify right side
209,751,440.47x = 35,226,448,884,241,064 - Step 5: Solve for x
x = 35,226,448,884,241,064/209,751,440.47 - Step 6: Final answer
x = 167,943,775.76
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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.