Finding the Fourth Proportional to 291,226,493.80, 436,839,740.70 and 138,171,485.80
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Solution
The fourth proportional to 291,226,493.80, 436,839,740.70 and 138,171,485.80 is: 207,257,228.70
Step by Step Solution
- Step 1: Write the proportion equation
291,226,493.80 : 436,839,740.70 = 138,171,485.80 : x - Step 2: Convert to fraction form
291,226,493.80/436,839,740.70 = 138,171,485.80/x - Step 3: Cross multiply
291,226,493.80x = 436,839,740.70 × 138,171,485.80 - Step 4: Simplify right side
291,226,493.80x = 60,358,796,029,005,736 - Step 5: Solve for x
x = 60,358,796,029,005,736/291,226,493.80 - Step 6: Final answer
x = 207,257,228.70
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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.