Finding the Fourth Proportional to 313,243,278.80, 469,864,918.20 and 266,885,877.20
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Solution
The fourth proportional to 313,243,278.80, 469,864,918.20 and 266,885,877.20 is: 400,328,815.80
Step by Step Solution
- Step 1: Write the proportion equation
313,243,278.80 : 469,864,918.20 = 266,885,877.20 : x - Step 2: Convert to fraction form
313,243,278.80/469,864,918.20 = 266,885,877.20/x - Step 3: Cross multiply
313,243,278.80x = 469,864,918.20 × 266,885,877.20 - Step 4: Simplify right side
313,243,278.80x = 125,400,310,859,313,232 - Step 5: Solve for x
x = 125,400,310,859,313,232/313,243,278.80 - Step 6: Final answer
x = 400,328,815.80
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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.