Finding the Fourth Proportional to 381,718,354.68, 571,510,768.23 and 206,212,621.50
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Solution
The fourth proportional to 381,718,354.68, 571,510,768.23 and 206,212,621.50 is: 308,742,643.07
Step by Step Solution
- Step 1: Write the proportion equation
381,718,354.68 : 571,510,768.23 = 206,212,621.50 : x - Step 2: Convert to fraction form
381,718,354.68/571,510,768.23 = 206,212,621.50/x - Step 3: Cross multiply
381,718,354.68x = 571,510,768.23 × 206,212,621.50 - Step 4: Simplify right side
381,718,354.68x = 117,852,733,732,187,216 - Step 5: Solve for x
x = 117,852,733,732,187,216/381,718,354.68 - Step 6: Final answer
x = 308,742,643.07
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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.