Finding the Fourth Proportional to 209,891,364.67, 289,742,973.67 and 135,588,162.58
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Solution
The fourth proportional to 209,891,364.67, 289,742,973.67 and 135,588,162.58 is: 187,171,670.85
Step by Step Solution
- Step 1: Write the proportion equation
209,891,364.67 : 289,742,973.67 = 135,588,162.58 : x - Step 2: Convert to fraction form
209,891,364.67/289,742,973.67 = 135,588,162.58/x - Step 3: Cross multiply
209,891,364.67x = 289,742,973.67 × 135,588,162.58 - Step 4: Simplify right side
209,891,364.67x = 39,285,717,421,833,744 - Step 5: Solve for x
x = 39,285,717,421,833,744/209,891,364.67 - Step 6: Final answer
x = 187,171,670.85
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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.