Finding the Fourth Proportional to 313,855,396.65, 433,180,410.71 and 207,821,790.09
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Solution
The fourth proportional to 313,855,396.65, 433,180,410.71 and 207,821,790.09 is: 286,833,775.51
Step by Step Solution
- Step 1: Write the proportion equation
313,855,396.65 : 433,180,410.71 = 207,821,790.09 : x - Step 2: Convert to fraction form
313,855,396.65/433,180,410.71 = 207,821,790.09/x - Step 3: Cross multiply
313,855,396.65x = 433,180,410.71 × 207,821,790.09 - Step 4: Simplify right side
313,855,396.65x = 90,024,328,384,634,496 - Step 5: Solve for x
x = 90,024,328,384,634,496/313,855,396.65 - Step 6: Final answer
x = 286,833,775.51
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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.