Finding the Fourth Proportional to 208,744,821.19, 288,059,960.86 and 115,931,307.75
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Solution
The fourth proportional to 208,744,821.19, 288,059,960.86 and 115,931,307.75 is: 159,980,821.47
Step by Step Solution
- Step 1: Write the proportion equation
208,744,821.19 : 288,059,960.86 = 115,931,307.75 : x - Step 2: Convert to fraction form
208,744,821.19/288,059,960.86 = 115,931,307.75/x - Step 3: Cross multiply
208,744,821.19x = 288,059,960.86 × 115,931,307.75 - Step 4: Simplify right side
208,744,821.19x = 33,395,167,972,683,612 - Step 5: Solve for x
x = 33,395,167,972,683,612/208,744,821.19 - Step 6: Final answer
x = 159,980,821.47
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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.