Finding the Fourth Proportional to 209,673,187.78, 289,349,876.06 and 115,585,269.81
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Solution
The fourth proportional to 209,673,187.78, 289,349,876.06 and 115,585,269.81 is: 159,508,155.75
Step by Step Solution
- Step 1: Write the proportion equation
209,673,187.78 : 289,349,876.06 = 115,585,269.81 : x - Step 2: Convert to fraction form
209,673,187.78/289,349,876.06 = 115,585,269.81/x - Step 3: Cross multiply
209,673,187.78x = 289,349,876.06 × 115,585,269.81 - Step 4: Simplify right side
209,673,187.78x = 33,444,583,493,885,160 - Step 5: Solve for x
x = 33,444,583,493,885,160/209,673,187.78 - Step 6: Final answer
x = 159,508,155.75
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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.