Finding the Fourth Proportional to 248,311,988.16, 342,639,491.76 and 143,888,161.92
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Solution
The fourth proportional to 248,311,988.16, 342,639,491.76 and 143,888,161.92 is: 198,547,669.95
Step by Step Solution
- Step 1: Write the proportion equation
248,311,988.16 : 342,639,491.76 = 143,888,161.92 : x - Step 2: Convert to fraction form
248,311,988.16/342,639,491.76 = 143,888,161.92/x - Step 3: Cross multiply
248,311,988.16x = 342,639,491.76 × 143,888,161.92 - Step 4: Simplify right side
248,311,988.16x = 49,301,766,670,549,376 - Step 5: Solve for x
x = 49,301,766,670,549,376/248,311,988.16 - Step 6: Final answer
x = 198,547,669.95
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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.