Finding the Fourth Proportional to 280,955,569.68, 421,578,666.77 and 203,868,029.66
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Solution
The fourth proportional to 280,955,569.68, 421,578,666.77 and 203,868,029.66 is: 305,907,486.50
Step by Step Solution
- Step 1: Write the proportion equation
280,955,569.68 : 421,578,666.77 = 203,868,029.66 : x - Step 2: Convert to fraction form
280,955,569.68/421,578,666.77 = 203,868,029.66/x - Step 3: Cross multiply
280,955,569.68x = 421,578,666.77 × 203,868,029.66 - Step 4: Simplify right side
280,955,569.68x = 85,946,412,137,962,384 - Step 5: Solve for x
x = 85,946,412,137,962,384/280,955,569.68 - Step 6: Final answer
x = 305,907,486.50
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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.