Finding the Fourth Proportional to 217,492,085.80, 326,238,128.70 and 209,131,330.60
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Solution
The fourth proportional to 217,492,085.80, 326,238,128.70 and 209,131,330.60 is: 313,696,995.90
Step by Step Solution
- Step 1: Write the proportion equation
217,492,085.80 : 326,238,128.70 = 209,131,330.60 : x - Step 2: Convert to fraction form
217,492,085.80/326,238,128.70 = 209,131,330.60/x - Step 3: Cross multiply
217,492,085.80x = 326,238,128.70 × 209,131,330.60 - Step 4: Simplify right side
217,492,085.80x = 68,226,613,947,485,040 - Step 5: Solve for x
x = 68,226,613,947,485,040/217,492,085.80 - Step 6: Final answer
x = 313,696,995.90
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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.