Finding the Fourth Proportional to 291,310,243.20, 436,965,364.80 and 277,873,315.20
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Solution
The fourth proportional to 291,310,243.20, 436,965,364.80 and 277,873,315.20 is: 416,809,972.80
Step by Step Solution
- Step 1: Write the proportion equation
291,310,243.20 : 436,965,364.80 = 277,873,315.20 : x - Step 2: Convert to fraction form
291,310,243.20/436,965,364.80 = 277,873,315.20/x - Step 3: Cross multiply
291,310,243.20x = 436,965,364.80 × 277,873,315.20 - Step 4: Simplify right side
291,310,243.20x = 121,421,014,544,553,376 - Step 5: Solve for x
x = 121,421,014,544,553,376/291,310,243.20 - Step 6: Final answer
x = 416,809,972.80
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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.