Finding the Fourth Proportional to 215,160,469.49, 296,920,077.30 and 122,340,985.53
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Solution
The fourth proportional to 215,160,469.49, 296,920,077.30 and 122,340,985.53 is: 168,829,780.71
Step by Step Solution
- Step 1: Write the proportion equation
215,160,469.49 : 296,920,077.30 = 122,340,985.53 : x - Step 2: Convert to fraction form
215,160,469.49/296,920,077.30 = 122,340,985.53/x - Step 3: Cross multiply
215,160,469.49x = 296,920,077.30 × 122,340,985.53 - Step 4: Simplify right side
215,160,469.49x = 36,325,494,880,525,784 - Step 5: Solve for x
x = 36,325,494,880,525,784/215,160,469.49 - Step 6: Final answer
x = 168,829,780.71
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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.