Finding the Fourth Proportional to 304,723,639.68, 420,544,557.21 and 172,588,142.64
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Solution
The fourth proportional to 304,723,639.68, 420,544,557.21 and 172,588,142.64 is: 238,186,325.49
Step by Step Solution
- Step 1: Write the proportion equation
304,723,639.68 : 420,544,557.21 = 172,588,142.64 : x - Step 2: Convert to fraction form
304,723,639.68/420,544,557.21 = 172,588,142.64/x - Step 3: Cross multiply
304,723,639.68x = 420,544,557.21 × 172,588,142.64 - Step 4: Simplify right side
304,723,639.68x = 72,581,004,026,235,104 - Step 5: Solve for x
x = 72,581,004,026,235,104/304,723,639.68 - Step 6: Final answer
x = 238,186,325.49
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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.