Finding the Fourth Proportional to 319,685,914.20, 479,234,938.50 and 115,163,972.76
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Solution
The fourth proportional to 319,685,914.20, 479,234,938.50 and 115,163,972.76 is: 172,640,072.49
Step by Step Solution
- Step 1: Write the proportion equation
319,685,914.20 : 479,234,938.50 = 115,163,972.76 : x - Step 2: Convert to fraction form
319,685,914.20/479,234,938.50 = 115,163,972.76/x - Step 3: Cross multiply
319,685,914.20x = 479,234,938.50 × 115,163,972.76 - Step 4: Simplify right side
319,685,914.20x = 55,190,599,403,054,280 - Step 5: Solve for x
x = 55,190,599,403,054,280/319,685,914.20 - Step 6: Final answer
x = 172,640,072.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.