Finding the Fourth Proportional to 274,688,138.80, 412,032,208.20 and 201,508,713.10
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Solution
The fourth proportional to 274,688,138.80, 412,032,208.20 and 201,508,713.10 is: 302,263,069.65
Step by Step Solution
- Step 1: Write the proportion equation
274,688,138.80 : 412,032,208.20 = 201,508,713.10 : x - Step 2: Convert to fraction form
274,688,138.80/412,032,208.20 = 201,508,713.10/x - Step 3: Cross multiply
274,688,138.80x = 412,032,208.20 × 201,508,713.10 - Step 4: Simplify right side
274,688,138.80x = 83,028,080,030,133,264 - Step 5: Solve for x
x = 83,028,080,030,133,264/274,688,138.80 - Step 6: Final answer
x = 302,263,069.65
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Double scale
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Similar ratio
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1.5x scale
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.